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Dor-Mar Heating, Air Conditioning & Plumbing
When your furnace stops working on a freezing January night or your AC struggles through a July heat wave, you need a team you can count on. Dor-Mar Heating, Air Conditioning & Plumbing has served homeowners across Central Ohio and Southwest Florida since 1962, delivering expert hvac services backed by six decades of family ownership and local expertise.
Introduction to Reliable Service
When it comes to your home’s comfort, reliability isn’t just a promise—it’s a necessity. At Dor-Mar Heating, Air Conditioning & Plumbing, we understand that homeowners need a team they can trust for every repair, installation, or maintenance visit. That’s why our professionals are dedicated to delivering reliable service every time, ensuring your hvac system and plumbing work seamlessly when you need them most.
Our commitment to dependable solutions means you can count on us for prompt responses, transparent communication, and expert care for your home. Whether you’re facing an unexpected breakdown or planning a system upgrade, our knowledgeable technicians are ready to provide the right solution tailored to your needs and budget. With Dor-Mar, you gain access to a company that values your comfort, safety, and satisfaction—backed by decades of experience serving communities across Central Ohio and Southwest Florida.
Discover the peace of mind that comes from partnering with a team that puts your home comfort first, using innovative technology and proven expertise to deliver results you can rely on.
Key Takeaways
- Dor-Mar has provided best-in-class residential and light commercial heating and cooling services since 1962 in Central Ohio and Southwest Florida, emphasizing family ownership and local trust built over three generations.
- Core hvac services include furnace and AC repair and installation, heat pumps, boilers, and 24/7 emergency service with same-day or next-day availability where possible.
- Customers can schedule online, call for fast service, or request a free in-home estimate for new systems and major upgrades.
- The Home Comfort Membership offers the easiest way to handle annual maintenance, priority service, and discounts on repairs and replacements.
- All work is completed by trained, licensed technicians focused on safety, code compliance, and protecting your home.
Licensed Local Heating & Cooling Experts in Central Ohio & Southwest Florida
Dor-Mar is a family-operated hvac and plumbing company founded in 1962, now proudly serving communities such as Gahanna, Newark, Columbus suburbs, Grove City, Buckeye Lake, and select areas of Southwest Florida including Marco Island and Fort Myers. What started as a small local operation has grown into an industry-leading contractor while maintaining the values that matter most to homeowners: honest work, fair pricing, and genuine care for your comfort.
Our services focus on residential homes and light commercial properties—small offices, retail spaces, and local businesses—that need efficient heating and cooling solutions. Whether you own a century-old home in Newark or a newer construction in a Columbus suburb, our professionals understand the unique challenges each property presents.
Every technician on our team is:
- Licensed and insured
- Background-checked for your peace of mind
- Trained to work on furnaces, air conditioners, heat pumps, boilers, and indoor air quality systems
- Experienced with equipment from all major brands installed since the 1990s
Local HVAC dealers like Dor-Mar are licensed, bonded, and insured professionals.
Dor-Mar operates as your local HVAC dealer, providing expert installation and maintenance services for heating and cooling systems.
Customers can reach a live team member or schedule online any day of the week using our convenient contact options for emergency and routine service. We offer flexible appointment windows and clear communication before arrival, so you know exactly when to expect us and what the visit will involve.
Before hiring any HVAC contractor, homeowners should review contracts for scope of work, timelines, and payment schedules before signing. It is also important to ensure your HVAC contractor holds active state or local licenses and carries general liability and workers’ compensation insurance.
Dor-Mar focuses on long-term relationships, honest diagnoses, and repair-first recommendations whenever it’s safe and cost-effective. We’d rather fix your current system properly than push an unnecessary replacement—that commitment to doing what’s right has kept families trusting us for generations.
Heating Services: Furnaces, Boilers & Heat Pumps
Keeping your home warm through Ohio winters and cool Florida nights requires equipment that works reliably when you need it most. Dor-Mar provides expert repair, replacement, and maintenance services for multiple types of heating systems, ensuring your family stays comfortable no matter what the weather brings.
Furnace Repair Services
When your furnace isn’t performing correctly, our technicians diagnose issues quickly and accurately. Common problems we handle include:
- No-heat situations
- Strange noises (banging, squealing, clicking)
- Short cycling (frequent on/off switching)
- High utility bills indicating efficiency problems
- Ignition or pilot light failures
We have experience with gas and electric furnaces from popular brands installed since the 1990s onward, so we can service most equipment in Central Ohio and Florida homes.
Furnace Installation and Replacement
When repair isn’t the right solution, we provide complete furnace installation services. Our process includes:
| Step | What’s Included |
|---|---|
| Assessment | Manual J load calculations for proper sizing |
| Options Review | Comparison of high-efficiency models (AFUE ratings often exceeding 95%) |
| Removal | Safe disposal of old equipment |
| Installation | Professional setup with code-compliant connections |
| Testing | Full system verification before we leave |
| Free estimates help you compare options and available rebates, so there are no surprises on installation day. |
Boiler Services
For homes and small commercial buildings with hydronic heat, we provide boiler repair and maintenance services including:
- Leak detection and repair
- Circulation pump problems
- Air in lines causing uneven heating
- Burner and heat exchanger inspections
- Upgrades to modern condensing models that can reduce energy use by 20-30%
Heat Pump Services
Heat pumps offer an energy efficient solution for both heating and cooling, and they’re increasingly popular across our service areas. We install and service modern high-efficiency heat pumps and dual-fuel systems—combining a gas furnace with an electric heat pump—that work efficiently in Central Ohio’s variable climate (operating in heating mode down to 0°F or lower) and Southwest Florida’s mild winter conditions.
Routine Heating Maintenance
Annual tune-ups each fall help maintain warranty coverage and extend equipment life. During a heating maintenance visit, technicians check burners, heat exchangers, safety controls, and airflow—catching small issues before they become expensive problems.
Cooling Services: Air Conditioning & Year-Round Comfort
Staying comfortable during humid Ohio summers and hot Florida weather requires air conditioning systems that respond quickly and run efficiently. When your AC breaks down, Dor-Mar offers fast response times and knowledgeable technicians who can get your cooling system back online.
Air Conditioning Repair Services
AC problems rarely happen at convenient times. Our technicians handle:
- Warm air blowing from vents
- Frozen evaporator coils
- Refrigerant leaks (R-410A and older systems)
- Electrical failures and wiring issues
- Thermostat malfunctions
- Unusual noises or odors
Same-day availability is our goal during peak season when possible, because we understand that a broken AC in July isn’t something that can wait.
AC Installation and Replacement
Whether you’re upgrading an aging system or installing cooling in a home that’s never had it, we deliver proper installation from start to finish:
- Central air systems engineered for your home’s specific needs
- Heat pump-based cooling for combined heating and cooling efficiency
- Ducted solutions tailored to older and newer construction
- SEER2 ratings optimized for energy efficiency and quiet operation
Our technicians perform proper sizing and airflow checks, verify duct conditions, and ensure systems are charged and commissioned correctly for reliable performance from day one.
Preventive AC Maintenance
ENERGY STAR data suggests that proper maintenance can prevent up to 70% of mid-summer failures. We recommend annual spring tune-ups that include:
- Coil cleaning (indoor and outdoor units)
- Condensate drain inspection and clearing
- Refrigerant level verification
- Fan performance checks
- Electrical connection inspection
Optional Comfort Upgrades
Beyond basic cooling, we help homeowners discover additional ways to improve comfort:
- Smart thermostats: Programmable and Wi-Fi models can save 8-10% on bills according to U.S. Department of Energy estimates
- Zoning systems: Ideal for multi-story homes where temperatures vary between floors
- Whole-home dehumidification: Maintain 30-50% relative humidity without overcooling
Energy Efficiency Solutions
At Dor-Mar, we believe that comfort and energy efficiency go hand in hand. Our team is passionate about helping homeowners reduce energy use, lower utility costs, and make choices that benefit both your budget and the planet. We offer a range of innovative solutions designed to maximize the performance of your hvac system while minimizing waste.
From high-efficiency heat pumps and advanced air conditioning systems to smart thermostats and zoning technology, our experts engineer every installation for optimal energy savings. We stay up to date with the latest advancements in hvac technology, ensuring you have access to equipment that delivers superior comfort and sustainability.
Our technicians will guide you through available rebates, discounts, and financing options—so you can take advantage of money-saving incentives and make energy-efficient upgrades more affordable. We also provide detailed performance assessments and maintenance plans to keep your system running at peak efficiency year after year.
Choose Dor-Mar for solutions that not only enhance your home comfort but also support a more sustainable future. Let us help you discover the right energy-efficient options for your home and start saving on energy costs today.
Improving Home Comfort
At Dor-Mar Heating, Air Conditioning & Plumbing, we know that true home comfort goes beyond just temperature—it’s about creating a healthy, cozy, and energy-efficient environment for your family. Our team specializes in delivering innovative solutions that ensure your HVAC system provides reliable heating and cooling all year long. Whether you’re looking to install a new system or need expert repair for your existing equipment, our professionals are dedicated to finding the right solution for your unique needs.
We focus on energy-efficient HVAC systems that help homeowners reduce energy use and lower monthly costs, all while maintaining the perfect indoor climate. Our approach combines advanced technology with proven expertise, so you can enjoy consistent comfort and improved air quality throughout your home. From smart thermostats to high-efficiency air conditioning and heating systems, we deliver services designed to maximize both comfort and savings.
No matter the season, you can count on Dor-Mar to install, maintain, and repair systems that keep your home comfortable and efficient. Let our team help you discover the best solutions for your home comfort—so you can relax and enjoy every room, every day.
Beyond HVAC: Plumbing, Electrical & Indoor Air Quality
Dor-Mar provides more than heating and cooling. Having a single trusted team for plumbing, electrical, and indoor air quality services means fewer contractors to manage and consistent quality across your home improvement projects.
Plumbing Services
Our plumbing division handles residential needs including:
| Service | Description |
|---|---|
| Water Heaters | Repair and replacement of tank and tankless models (tankless can offer 20-50% efficiency gains) |
| Drain Cleaning | Professional clearing of clogged drains |
| Leak Detection | Finding hidden leaks before they cause damage |
| Sump Pumps | Installation and repair for basement flood protection |
| Fixture Replacement | Kitchen and bathroom upgrades |
Electrical and Appliance Services
Basic residential electrical capabilities include circuit troubleshooting, breaker panel issues, and dedicated circuits for hvac system equipment. We also offer repair services for key home comfort appliances where available in our service areas.
Indoor Air Quality Solutions
Central Ohio and Southwest Florida each present unique air quality challenges. We offer innovative solutions including:
- Whole-home air cleaners capturing 99% of particles down to 0.3 microns
- High-MERV filtration (MERV 13+ recommended for enhanced protection)
- UV lights that kill 99.9% of mold and bacteria
- Humidity control for muggy Ohio summers
- Duct cleaning when static pressure tests indicate restrictions
Water Treatment
Central Ohio’s hard water (often 10-20 grains per gallon) can shorten appliance life by 30%. Water softeners and filtration systems address local water quality concerns, protecting both comfort and plumbing equipment.
Radon Mitigation
In Central Ohio, approximately 1 in 3 homes exceeds the EPA action level of 4 pCi/L for radon. We provide radon mitigation services that integrate cleanly into existing homes, protecting your family’s health.
Commercial Services
Dor-Mar Heating, Air Conditioning & Plumbing is proud to serve not only homeowners but also local businesses and light commercial properties throughout Central Ohio and Southwest Florida. We understand that reliable hvac services are essential for maintaining a comfortable, productive environment for your employees and customers.
Our commercial team specializes in the installation, repair, and maintenance of heating, cooling, and indoor air quality systems for small offices, retail spaces, and other light commercial facilities. We tailor our solutions to meet the unique needs of each business, ensuring efficient system performance, minimal downtime, and long-term savings.
With flexible scheduling, rapid response times, and a commitment to quality workmanship, Dor-Mar delivers the reliability and expertise your business can count on. Our certified technicians are equipped to handle everything from routine maintenance to emergency repairs, helping you maintain comfort and control costs all year long.
Partner with Dor-Mar for commercial hvac solutions that support your business’s success—so you can focus on what matters most.
Residential Services
Dor-Mar’s residential services are designed with homeowners in mind, offering a full spectrum of HVAC services to keep your home comfortable and efficient. Our knowledgeable technicians handle everything from new system installation to routine maintenance and emergency repair, ensuring your HVAC system operates at peak performance year-round.
We provide expert installation of heating and cooling systems tailored to your home’s specific requirements, as well as thorough maintenance plans that help extend equipment life and maintain energy efficiency. When repairs are needed, our team responds quickly with reliable solutions that restore comfort and minimize disruption.
Homeowners also benefit from access to valuable resources, including comprehensive warranties and maintenance memberships that make it easy to keep your system running smoothly. With Dor-Mar, you can rely on efficient, professional service and a commitment to delivering comfort, reliability, and peace of mind for your home.
24/7 Emergency Service & Service Area Coverage
Heating or cooling failures rarely happen at convenient times. Dor-Mar offers emergency and after-hours service options to restore your home comfort quickly when it matters most.
What Qualifies as an Emergency?
- No-heat situations during freezing Ohio nights (below 32°F)
- Complete AC outages during dangerous heat waves (heat index above 90°F)
- Critical plumbing issues that threaten property damage
Service Area Coverage
We serve communities across our Central Ohio and Southwest Florida service areas:
Central Ohio:
- Gahanna
- Columbus metro HVAC and plumbing services
- Newark
- Grove City
- Buckeye Lake
- Surrounding Westerville and greater Franklin County home services
- Learn more about our Columbus-area heating and cooling expertise
Southwest Florida:
- Marco Island heating and cooling services
- Fort Myers HVAC repair and installation
- Select coastal and inland communities
Emergency Response Process
Dispatchers prioritize vulnerable customers—families with young children, older adults, and those with medical needs—when conditions are extreme, subject to availability and safety. Reach emergency service by phone at 866-947-1800 or through our 24/7 online request form.
During normal conditions, we dispatch within hours. Peak weather events may extend wait times, but we communicate honestly about what to expect.
Our technicians arrive in clearly marked vehicles with common parts and tools, aiming to resolve most emergencies in a single visit whenever parts availability allows.
Home Comfort Membership & Preventive Maintenance Plans
Dor-Mar’s Home Comfort Membership is an annual maintenance plan designed to keep your heating and cooling equipment running efficiently while catching issues early—before they become expensive emergencies.
Membership Benefits
| Benefit | What You Get |
|---|---|
| Scheduled Tune-Ups | Furnace maintenance in fall, AC maintenance in spring |
| Priority Service | Jump ahead of non-members during busy seasons |
| Repair Discounts | 15-20% off repair costs |
| Installation Pricing | Preferred pricing on new system installations |
| IAQ Upgrades | Special pricing on indoor air quality equipment |
Affordable Monthly Investment
Membership costs are structured as an affordable monthly or annual fee—often under $20/month—which is typically less than the cost of a single unexpected repair. This makes budgeting easier for homeowners and eliminates surprise maintenance expenses.
Automated Reminders
Members receive reminders when seasonal maintenance is due, so you don’t have to track dates or worry about missing tune-ups before extreme weather hits.
Real Savings
ASHRAE studies on maintained systems show 10-20% energy savings and 50% fewer breakdowns compared to neglected equipment. Compare the cost of membership with past repair bills and energy use to see how preventive care delivers long-term value.
Enroll during a service call, over the phone, or through an online form. Membership details and terms are clearly explained before signup, with no hidden exclusions—exclusions apply only where specifically noted in your agreement.
Customer Support
At Dor-Mar Heating, Air Conditioning & Plumbing, our commitment to customer support sets us apart. Our team of experts is always available to answer your questions, provide guidance on choosing the right HVAC system, and offer advice on maximizing energy efficiency and system performance. We understand that every homeowner’s needs are unique, which is why we deliver personalized support at every step.
We offer a wealth of resources to help you get the most from your HVAC system, including educational videos, step-by-step guides, and a comprehensive FAQ section. Whether you’re interested in learning more about heat pumps, energy-saving tips, or routine maintenance, our support team is here to help you make informed decisions.
Our dedication to service doesn’t end after installation or repair—Dor-Mar’s experts are committed to supporting you throughout the life of your system. With responsive communication, ongoing maintenance reminders, and a genuine interest in your home comfort, you can trust that you’re in good hands with our team. Let us help you achieve lasting comfort, efficiency, and satisfaction in your home.
How to Choose the Right Heating & Cooling Partner
Selecting an hvac company for your home is an important decision. Dor-Mar Heating, Air Conditioning & Plumbing proudly serves customers across multiple regions, ensuring reliable heating and cooling services for homeowners in Central Ohio and Southwest Florida. Many HVAC companies, including some with a presence across the country, highlight their licensed, bonded, and insured services to showcase their widespread availability and expertise.
Here’s a quick guide to help homeowners in Central Ohio and Southwest Florida evaluate contractors and feel confident about their choice. When reviewing credentials, look for industry-standard certifications such as NATE and EPA 608, which are important credentials for HVAC contractors. Homeowners can also locate a local HVAC dealer through online dealer locators provided by major HVAC brands, ensuring access to authorized professionals for installation, diagnostics, and maintenance.
Service Experts has been a trusted name for comprehensive HVAC repair, plumbing, and electrical services across North America since 1996, employing nationally certified, ACE-certified professionals who are licensed, bonded, and insured. Lennox offers premium, award-winning systems that are exceptionally quiet and energy efficient, and provides tools and resources for dealers to elevate their HVAC business and access technical support. Lennox Industries is headquartered in Texas, highlighting its strong regional base and industry leadership. Trane dealers can provide contactless support and remotely troubleshoot HVAC system issues, while YORK has been trusted as a commercial HVAC expert for more than 150 years, providing heating and cooling solutions.
Check Credentials
- Licensing and Insurance: Verify current state licensing and adequate liability coverage
- Years in Business: Dor-Mar has operated continuously since 1962 under family leadership
- Certification and Training: Look for brand partnerships (we’re a top team contractor with Rheem and Coleman) and ongoing technician education
- BBB Accreditation: Dor-Mar has maintained A+ BBB rating since 1992
Read Reviews
Search for recent local reviews and testimonials that mention:
- Punctuality and communication
- Cleanliness and respect for your home
- Clear explanations of work completed
- Follow-through on warranty or callback issues
Ask the Right Questions
When evaluating any company, ask about:
- Diagnostic fees versus free estimates
- Written estimates before work begins
- Brands serviced (we service all major brands)
- Repair-first options versus replacement pressure
- Access to current rebates and tax credits
Installation Standards
For new system purchases, verify that the company performs:
- Manual J load calculations for proper sizing
- Code-compliant permitting (Dor-Mar handles permits where required)
- Post-installation testing and commissioning
- Written warranty documentation
Ready to experience reliable service from a company that’s served your community for over 60 years? Schedule a visit, request a free estimate for a new system, or contact our team with questions about your current equipment. We’re here to help you maintain comfort in your home—today and for years to come.
Frequently Asked Questions
How often should I schedule maintenance for my furnace and air conditioner?
Most manufacturers and energy agencies recommend a professional tune-up for your furnace once a year (typically in the fall) and for your air conditioner or heat pump once a year (typically in the spring). This maintenance schedule helps maintain warranty coverage, reduces the risk of breakdowns during extreme weather, and keeps your energy bills lower by ensuring systems run at peak efficiency.
Dor-Mar’s Home Comfort Membership bundles these annual visits into a simple, predictable plan with automated reminders so you never miss a scheduled service.
What signs indicate it might be time to replace my HVAC system instead of repairing it?
Common indicators that replacement may be more cost-effective than repair include:
- Equipment age over 12-15 years for furnaces and AC units
- Frequent repairs within the last two seasons
- Rising energy bills (increases of 20% or more)
- Comfort problems like uneven temperatures or inability to maintain set points
- Major component failures (cracked heat exchanger, failed compressor)
- Obsolete parts that are difficult or impossible to source
During service calls, our technicians present both repair and replacement options with estimated costs and projected savings, giving you the resources to make an informed choice that fits your budget.
Do you offer financing or payment options for new heating and cooling systems?
Yes, Dor-Mar typically offers financing options with approved credit for new furnaces, air conditioners, and complete system replacements. This helps homeowners spread costs over time rather than pay the full purchase price upfront. Available plans, terms, interest rates, and promotions can change throughout the year, so we encourage customers to call or check online for current offers.
When you request a free in-home estimate, ask about financing details so we can tailor options to your budget and discuss any applicable rebates in Central Ohio or Florida.
Can Dor-Mar service equipment installed by another company?
Absolutely. Our technicians routinely repair and maintain furnaces, air conditioners, heat pumps, and boilers installed by a wide range of other contractors and brands. As long as parts are still available and the equipment can be serviced safely and to code, we provide repair options.
If a system is unsafe, improperly installed, or beyond economical repair, our technicians will explain why and offer replacement recommendations—but we always present facts rather than pressure.
What should I do before calling for emergency HVAC service?
Before calling, you can safely take a few simple steps:
- Check thermostat settings and batteries
- Ensure circuit breakers or equipment switches are in the “on” position
- Verify that air filters aren’t severely clogged
- Look for obvious signs like water pooling around the indoor unit
Avoid opening gas lines, removing furnace panels with safety interlocks, or attempting electrical repairs without proper training—these actions can be dangerous and may void warranties.
When you call Dor-Mar, have your equipment brand, approximate age (refer to installation date if known), and a description of the problem ready. Details like “no heat,” “warm air from vents,” unusual noises, or error codes help our dispatchers triage your call faster and ensure technicians arrive prepared.
About Us
Dor-Mar Heating, Air Conditioning & Plumbing is a family-operated company with deep roots in the communities we serve. Since 1962, our team has been dedicated to providing exceptional home comfort services with a focus on integrity, innovation, and customer care.
What sets us apart is our unwavering commitment to doing what’s right for our customers—delivering honest recommendations, transparent pricing, and reliable service on every job. Our technicians are not only highly trained and certified, but also passionate about staying ahead of industry trends and technology to bring you the best solutions available.
We take pride in being more than just a service provider; we’re your neighbors, invested in the well-being of your home and community. Whether you need expert advice, emergency support, or a complete system upgrade, you can rely on Dor-Mar’s expertise and dedication to deliver comfort you can trust—today and for the future.
To help customers better understand our heating and cooling services, Dor-Mar also provides video content that showcases our expertise and demonstrates the quality of our work, reflecting our family-owned HVAC company’s history and values.
Conclusion
Your home’s comfort and efficiency deserve the attention of true experts. At Dor-Mar Heating, Air Conditioning & Plumbing, we combine decades of experience, innovative solutions, and a genuine commitment to customer satisfaction to deliver reliable service you can count on. Whether you’re searching for the right solution for your heating, cooling, plumbing, or indoor air quality needs, our team is here to support you every step of the way.
Don’t settle for less when it comes to your comfort—discover why homeowners and businesses across Central Ohio and Southwest Florida rely on Dor-Mar for all their hvac and home service needs by exploring our comprehensive home comfort services. Schedule your service, request a free estimate, or join our Home Comfort Membership today, and experience the difference that comes from working with a company dedicated to your comfort, savings, and peace of mind.
