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Whole House Generators

Dor-Mar electrical services

Reliable Backup Power for Your Entire Home

Keep Your Home Powered During Outages with a Whole House Generator

Power outages can strike at any time, leaving your home without electricity for hours or even days. With a whole house generator, you can enjoy uninterrupted power and keep essential appliances running, even during storms, grid failures, or blackouts. At Dor-Mar Heating, Air Conditioning, Plumbing, and Electrical Services, we specialize in whole house generator installation, maintenance, and repair to ensure your home remains powered and protected.

Why Install a Whole House Generator?

A standby generator automatically kicks in when a power outage occurs, ensuring your home stays safe and functional. Key benefits include:

⚡ Automatic Power Restoration – No need to start the generator manually.
⚡ Protects Essential Appliances – Keeps HVAC systems, refrigerators, medical devices, and lights running.
⚡ Increases Home Value – Adds long-term reliability and appeal to your property.
⚡ Safety & Security – Prevents food spoilage, burst pipes, and security system failures.

Our Whole House Generator Services

Professional Generator Installation

A properly installed standby generator ensures seamless operation when you need it most. Our certified electricians provide:

  • Site Assessment & Load Calculation – We determine the right generator size for your home.
  • Expert Installation – Safe, code-compliant setup for long-term performance.
  • Automatic Transfer Switch (ATS) Setup – Ensures a smooth transition to backup power.

Generator Maintenance & Tune-Ups

Routine maintenance is essential to keep your generator in optimal condition. Our preventative maintenance services include:

  • Oil & Filter Changes – Prevent engine wear and ensure smooth operation.
  • Battery & Fuel System Inspections – Avoid startup failures during an outage.
  • Load Testing – Ensures your generator can handle your home’s power demand.

Emergency Generator Repairs

If your whole house generator isn’t working, our technicians provide fast and reliable repairs to restore backup power. We handle:

  • Generator Won’t Start – Diagnosing battery, fuel, and ignition issues.
  • Power Output Problems – Fixing voltage fluctuations and efficiency issues.
  • Wiring & Transfer Switch Failures – Ensuring seamless automatic transitions.].

Choosing the Right Whole House Generator

Selecting the right generator depends on your home’s power needs. We help homeowners choose between:

🔹 Natural Gas Generators – Connects to your home’s existing gas line for unlimited runtime.
🔹 Propane Generators – Ideal for homes without natural gas access, offering reliable fuel storage.
🔹 Diesel & Dual-Fuel Generators – High-efficiency options for extended power outages.

How a Whole House Generator Works

1️⃣ Power Goes Out – The system detects an outage in seconds.
2️⃣ Generator Starts Automatically – The unit powers up without manual intervention.
3️⃣ Your Home Stays Powered – The generator supplies electricity to your essential circuits.
4️⃣ Utility Power Returns – The system safely switches back to grid power.

Get a Free Estimate on Whole House Generators

Be prepared for the next power outage with a whole house generator from Dor-Mar. Our expert team is ready to help with installation, maintenance, and repairs.

See What Our Many Satisfied Customers Say…

Dor Mar Heating & Air ConditioningExcellentDor Mar Heating & Air Conditioning4.6★★★★☆ Based on 1359 reviews fromSee all reviews review us onBryn SmathersBryn Smathers ★☆☆☆☆ Make sure prior to the job you discuss price, process and have it in writing. Our hot water tank needed a new valve which was covered under warranty. Our service maintence package with Dor Mar covered the first hour of labor for the repair. They sent me a bill for the hour labor it took them but I was told it was covered. Very discouraged by this and will be cautious with the next repair. Not good practice especially to a customer who bought the hot water tank through Dor Mar.Response from the ownerUnfortunely we are at the mercy of the manufacturer when it comes to what is covered under warranty, we are sorry that it was not discussed prior to your repair call that you would owe the labor to put the part in, standard protocall includes a phone call from our parts department to discuss costs before hand. Our records indicate you had discussed the price for the parts call before excepting the estimate for the work. Your labor for the Daignostic call was covered under your Service Contract. We appologize for any misunderstanding and hope you continue with Dor-Mar! Shawn HeartShawn Heart ★☆☆☆☆ 3 times in a row of having appointments and never showResponse from the ownerWe apologize there has been an issue with scheduling, unfirtunetly we are not able to locate you in our system to address this issue. Please Contacts us as soon as possible and Ask for our Customer Satisfation Manager, or reach out to her directly through email kayden@dormarhvac.com Sharon WashingtonSharon Washington ★★★★★ Steve was very professional and knowledgeable about the problem with my furnace. I appreciate his fast response and fixing my problem. Thank you.Response from the ownerThank you Sharon for taking the time to leave your technician a thoughtful review! Mark EdwardsMark Edwards ★★★★★ Have been a Dor Mar customer for years. In this instance Calob came out to conduct my Spring AC inspection. The unit had a loud vibration. Calob located the issue quickly and silenced the vibration. Conducted the inspection quickly and pronounced me good to go for the AC season. Will continue to utilize their services. Top notch.Response from the ownerThank you for taking the time to leave a great review for our technician. We are very pleased to hear you had such a great expirience! PLANEGANG TvPLANEGANG Tv ★☆☆☆☆ These guys come out and fix an issue but cause another one in the process to charge you for the follow up visit. They are slick.Response from the ownerWe are unfortunelty unable to locate you in our system to address this issue. Please reach out to our Customer Satisfaction Manager kayden@dormarhvac.com or call our office @740-345-6639 and ask for her directly. Elijah WilliamsElijah Williams ★★★★★ Dor Mar hires great prospects who provide excellent service. My tech, Preston, came and knocked the job out of the park — I’ve had 3 different companies come out and inspect my heat pump several times but we got no where. Wasted money and wasted time.Not only did Preston diagnose the problem on the first visit, he explained everything well enough for me to understand what needed to be done, ordered the parts and had my AC running the next week — Very satisfied! 10/10Response from the ownerWe truly appreciate you leaving a thoughtful review for our technician Elijah. Thank you for taking the time out of your day to provide such wonderful feedback! Patricia HattenPatricia Hatten ★★★★★ Seemed knowledgeable and helpful with informationResponse from the ownerWe appreciate the great review Patricia! Candace ElkinsCandace Elkins ★★★★★ They were on time and professional.Response from the ownerWe appreciate the great review Candace! Kody DavisKody Davis ★★★★★ Every technician that we have had here has been helpful and mindful of a homeowners needs! 10/10!Response from the ownerThank you Kody for the great review! Margaret KieberMargaret Kieber ★★★★★ Response from the ownerWe appreciate the 5-star review Margaret! Matt LucasMatt Lucas ★★★★★ The Dor-Mar team services our heating, air-conditioning, plumbing and drains, and now is helping us with radon mitigation. One common thread in dealing with all of the technicians is they are honest, trust-worthy and professional. Greg B. has been helping us with our radon system and his expertise is greatly appreciated. We are sorry the rating system only goes to 5 - because they truly deserve a higher score.Response from the ownerWe truly appreciate you taking the time to leave a thoughtful review about your experience with our technicians Matt, and thank you for choosing Dor-Mar Home Services! MD TrappMD Trapp ★★★★★ Response from the ownerThank you for the 5-star rating! Jamie GibsonJamie Gibson ★★★★★ Knowledgeable and helpful!Response from the ownerWe appreciate the great review Jamie! Christopher StottsChristopher Stotts ★★★★★ Response from the ownerThank you for the 5-star rating Christopher! Johnny NewsomeJohnny Newsome ★★★★★ He went above and beyond to make sure everything was in grade working order. Thanks for a great job.Response from the ownerThank you Johnny, for taking the time to leave a great review about your experience! Brian HBrian H ★☆☆☆☆ Typical untrustworthy HVAC company. What they lack in knowledge they make up for with deceit.Response from the ownerUnfortunately we are not able to locate you in our system, we would like to look into the service you had done to see how we can improve. Please reach out to our Customer Satisfaction Manager kayden@dormarhvac.com or call into the office and ask for her directly so we may get to the bottom of this. Juanita RamseyJuanita Ramsey ★☆☆☆☆ Dor Mar sent out a employee to drain my hot water heater as part of a maintenance program that I paid for. That employee spent most of the time walking around the inside of my house (my hot water tank is in the basement with an outside access only) taking pictures of all of my plumbing. He did not ask to do this he just started taking pictures saying he was supposed to. He opened my cabinet under my sink and wanted to know why I had a bucket there. (it was to carry cleaning supplies in when cleaning around the house)Then he told me that there was a problem with my tank since he emptied it and it was leaking. I asked him how much it would cost to fix it and he immediately said $2700.00. I told him just to turn the water off to the tank and to just leave. He had placed a bucket under where it was leaking, and he said I won't have hot water. If he turned it off. He then tightens the screw a little more and then it quit leaking.Another problem I had was I told him he could park beside the house (I showed him where) but for some reason he just wanted to walk through the front door and through the house and then out the back door. He did this about 3-4 times.Finally, when he was done, I opened the gate so that he wouldn't walk through my house again and he went straight to the front door saying he was so sorry, but he had lost all of the pictures that he took and had to come in to retake them all again. At this point I was ready to call the sheriff to escort him off the property. I did let him take the pictures and finally he was off.He was polite when talking to me I have no issues there, but all the other stuff was unnecessary... He was there to drain my hot water tank not to do a photo shoot. I will try to come to the office on Monday I am still extremely upset about this. IT IS NOT THE WAY TO DO BUSINESS!Response from the ownerFrom your description of what the technician did while in your home perfectly describes our Plumbing maintenance Juanita. The plumbing maintenance includes a check on the entire plumbing of the home and the flushing of your hot water tank, we do apologize if that was not properly explained to you when your service was booked. It is also unfortunate the tech couldn't follow the directions you offered to not have to walk through the home and we apologize for that, over all we hope this gives you some ese on what was done by the tech as he was just doing his job. S HawkinsS Hawkins ★★★★★ Anthony was greatResponse from the ownerThank you for leaving our tech a great review! Angela SeymourAngela Seymour ★★★★☆ The service was great. But they don't honor their service windows. My service windows was 12-4 and I get a message at 9:40 that the tech was on the way. I had to rearrange my schedule to fit in the cleaning. Luckily I was close by and could make it to the house in time.Response from the ownerWe apologize there was an issue with your scheduling, we always try our best to make our time frames, in the future wed be more than happy to have the Tech wait for the scheduled time frame had we known it was an issue for you to make the appointment earlier. Chuck DunfeeChuck Dunfee ★★★★★ Response from the ownerWe appreciate the 5-star rating Chuck! Faith NeibargerFaith Neibarger ★★★★★ Response from the ownerThank you for the 5-star review Faith! Tara BeyerTara Beyer ★★★★★ Response from the ownerThank you for the 5-star rating Tara! junior pjunior p ★★☆☆☆ Techs are great and do a very good and thorough work, but their billing and customer support will rip you offResponse from the ownerIts unfortunate that you had an experience with our customer service reps that made you feel that way, If could you please reach out to the head of our Customer satisfaction team to provide some more details on your situation so we can better ensure it doesn't happen again it'd be greatly appreciated. You may reach her by email - kayden@dormarhvac.com or call our office @ 740-345-6639 and ask for her directly. Patricia DanielsPatricia Daniels ★★★★★ Very mannerly and knowledgeable and politeResponse from the ownerWe appreciate the great review Patricia! Bovenizer SmithBovenizer Smith ★★★★★ Thank you Dor Mar team with the help today. They quickly repaired a leak. Great communication with scheduling and provided an estimate before starting the job. They have done so much great work at our house. They installed our furnace several years ago, a new water heater and softner this summer. They also have done several repairs of leaky water lines. I cannot say enough good things about them.Response from the ownerThank you so much for taking the time to provide such wonderful feedback about your experience with out team! And thank you for continuing to choose Dor-Mar! Brad RiggsBrad Riggs ★★★★★ Response from the ownerThank you for the 5-star rating Brad, we appreciate it! Michael LysMichael Lys ★★★★★ Ben and your team did a great job. They were EARLY and got everything done at the price they quoted me. Whenever we need plumbing or HVAC service you will definitely be the company we call!Response from the ownerThank you for taking the time to leave such a great review for our technician Michael! Kelly BrisonKelly Brison ★★★★★ Steve was fantastic. He is knowledgeable and great. He talked us through what needed fixed and explained it all so easily. And was friendly. Could not recommend enough.Response from the ownerWe appreciate the great review and recommendation of our technician Kelly! Patty WhitePatty White ★★★★★ Response from the ownerThank you for the 5-star review Patty! Will WeverWill Wever ★★★★★ Steve was Friendly, professional and got the job done quickly. Highly recommend.Response from the ownerThank you for taking the time to leave a great review for our technician Will! Becky SticklesBecky Stickles ★★★★★ Nice and polite young manResponse from the ownerThank you for the 5-star review Becky! Sweetbird HillSweetbird Hill ★★★★★ Response from the ownerWe appreciate the 5-star review! Dan BarnettDan Barnett ★★★★★ Punctual and polite. Very knowledgeable. Respectful and answered any and all questions. Highly recommend.Response from the ownerThank you for taking the time to leave a great review Dan! Nichole DavidsonNichole Davidson ★★★★★ Preston came out to my husbands and I home our heat was not working and he fixed the problem and told us what we need to do to keep it up and running he was amazing and very detailed with his work I would definitely recommend him and this company to anyone and I would use them again he even called us to see how it was working we can’t thank and appreciate him enough thanks again Preston and Dor Mar for getting our heat fixed!!Charles GriffithCharles Griffith ★★★★★ Response from the ownerThank you for the 5-star review Charles! Scott RichmondScott Richmond ★★★★★ Response from the ownerThank you for the 5-star review Scott!! Rett BlackRett Black ★★★★★ Chris seemed to isolate the problem quickly. He was prompt and polite.Response from the ownerWe appreciate the great review Rett! sheryl longendykesheryl longendyke ★☆☆☆☆ My daughter house temperature in pic and look at what thermostat is set on.. they have had them out several times and they say it is working . 3 kids and this is unacceptable to not fix this correctly. Someone needs sent that actually knows what they are doing.Response from the ownerUnfortunately we cannot locate the customer in our system, please reach out so we may fix the issue at hand. Contact kayden@dormarhvac.com or our office at 740-345-6639 WhatGoes RoundWhatGoes Round ★★★★★ Chris did a very professional job, installed the thermostat and instructed how to use it,Response from the ownerThank you for taking the time to leave a great review for our Technician! Dave ReistDave Reist ★★★★★ All good.Response from the ownerThank you for the 5-star review Dave! Jon BonnettJon Bonnett ★★★★★ Response from the ownerThank you for the 5-star rating Jon! Brendon McClellanBrendon McClellan ★★★★★ Jordan, and DJ from dormar came out to get our plumbing fixed which was leaking under our apartment in multiple locations causing flooding. They not only fixed the problem but made sure that everything underneath the place was protected and cleared the flooding that was down there they did an amazing job I would have them out again if I needed any more work done.Response from the ownerWe appreciate the great review for our technicians Brendon!! Thank you for taking the time to leave it! Kathleen SniderKathleen Snider ★★★★★ Jayden was very polite. Finished his work promptly.Response from the ownerThank you for the great review for our technician Kathleen! Dawnn DeeDawnn Dee ★★★★★ Beyond amazing service and customer support. Employee Anthony P. was truly a blessing and went to bat for me against my home warranty company and got my full service approved! Anthony was extremely knowledgeable and subdued all my concerns and doubts. It was as if a huge burden was lifted off my shoulders! Next plumping issue I experience I’ll go straight to Dor Mar, they are well worth the price from admiration and care alone!Response from the ownerThank you so much Dawnn for leaving such a thoughtful review for our technician. It is greatly appreciated! Jennifer BrownJennifer Brown ★★★★★ Calob arrived right on time and was so polite and professional. He quickly replaced the material around the AC line and made sure to let me know to call them back if there’s any problem. I love Dor Mar. Every single employee there is wonderful from reception to the technicians.Robert O'LearyRobert O'Leary ★★★★★ Response from the ownerThank you for the 5-star rating Robert! Stanley HortzStanley Hortz ★★★★★ DJ did a great job. Been using Dor Mar since 1986.Response from the ownerWe appreciate the continued business Stanley, thank you so much for being such a great customer! Jim BoltonJim Bolton ★★★★★ Response from the ownerWe appreciate the 5-star review Jim! Trevor MonkTrevor Monk ★★★★★ Response from the ownerThank you for the 5-star rating Trevor! Kathryn PaulKathryn Paul ★★★★★ Response from the ownerThank you for the 5-star view Kathryn! js_loader

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