Reviews of local pros in Seattle, Washington

They quickly addressed my need for a water heater replacement. Haul away and install took just 2 hours! Let them know of your Costco membership for a 10% cash rebate. Take an additional 2% when charging to a Costco Citi Card and another 2% with a Costco Executive Membership.

Service rip-off! I paid Brennan $199 for the annual maintenance on my gas furnace and heat pump. The tech was prompt and polite and got started right away. As he was wrapping up, he made 2 recommendations for preventive repairs. I usually pass on such things, but since I trusted the Brennan name, I accepted the additional $573 recommendation. The tech finished in less than 30 minutes, which seemed too fast for what he described. That prompted me to look up the parts online, and I found them available from Amazon for less than $100. I don't mind Brennan making a profit, but this was a total rip-off. They may be great on a new install, but watch your wallet on a service call.

Check the number of complaints they have with the BBB. According to their bid, their work was "Adding new switches and outlets in stair well, kitchen, customer location." They didn't replace the switch to the stair well and left the other outlets and switches just wired, with no actual outlets or switches! Some of them were also not put in the locations as shown in our drawings. Their contract also states "Pay Schedule: 50% To schedule - 40% Trim - 10% Final Inspection." We paid 50% to schedule, they didn't do the trim (which is to install the outlets and switches) and then they charged my credit card in full without my permission. Their total was $4,950 for 5 1/2 hours of work which is about $900 per hour. Their response to my complaint to the BBB was a flat out lie. They said they finished their work and that we refused to let the inspector in. We allowed the inspector in and they failed the final inspection because they weren't done. Now we have to hire another company to finish their work. Total waste of time. I'm sure they'll post a response to this review that will not be truthful but the fact is they didn't fulfill their contract.

Our experience from estimate to installation was outstanding! Their price and quality of installation was great deal. I highly recommend them for any Water Heater, AC, or Heating needs!

I had yearly preventive maintenance done on my heat pump, which Brennan had installed 2 years ago. The technician was professional and courteous. He asked me if I had questions and thoroughly answered them.

We were extremely disappointed with the project management and communication from Brennan when they installed our heat pump in July 2025. While the actual installation work was fine, the customer service experience was frustrating and unprofessional throughout. We had to chase down information repeatedly, with many of our messages going completely unanswered. I would not recommend Brennan if you value clear communication and professional project management. For a $20,000 project, the level of service was unacceptable.

We had our furnace replaced and ac installed on Wednesday the 27th. Worked fine for one day and completely stopped working by the 29th. I called multiple numbers multiple times and FINALLY got ahold of someone and they told me that the earliest they could send someone to look at it would be the following Monday! They said that was after they did some shifting around because if they didn’t it would have been weeks…. Completely unacceptable in my opinion! This company should be ashamed of themselves. It’s 100 degrees outside and it was becoming unsafe for our 16 month old child and 3 large dogs. My husband came across Hales. The operator was amazing bending over backwards to get us squeezed in with a tech. The tech was at our house within 20 mins, issue diagnosed in 5 and resolved the issues CAUSED by Brennan’s in 15!

I DO NOT RECOMMEND BRENNAN’S!
Sincerely an extremely dissatisfied veteran family.

Very good customer service. Work person was efficient, knowledgeable, and kind. Talked to my kid, was respectful of my pets. Did a good job explaining too.

The Brennan Heating and AC scheduling crew are always so friendly and helpful. Steve, the technician who inspected and serviced our heat pump was great. He was fast, knowledgeable, courteous and professional. He ensured that I was informed of the condition of our heat pump and provided us with options. Everyone from the Brennan team delivers exceptional customer service!

Brad and Brennan Heating etc saved the day after our furnace drain clogged creating a large wet area of carpet. They instructed us what to do and were out at our house almost immediately. Of the few problems it could have been his first guess was the one. He fixed the clog, added a water sensor for backed up water, and updated the tight pipes for easier access to address any future clogs. Fixed and Future-Proofed!

The service technician (Reginald) Was outstanding. He was efficient, on time, explained all the problems we are having, and solved our issues quickly. I cannot recommend him highly enough.

We hired Brennan for a panel/meter replacement and a whole home rewire (upgrade from knob n tube), which was bid at over $20,000. We chose this company because they had immediate openings to complete the job. The job was bid to take 4 days (similar timeframe as the other companies that we received bids from). It took them over 9 days to complete our job spanning over 1 month because they consistently overbooked their schedule and often sent only one technician. Then the main electrician informed me that the other electrician on our job was not qualified to do the work or wasn't performing the work to standard so they pulled him off our project.

Besides the time it took them to complete the job, they also did not clean up after they worked leaving dust/debris on carpets, floors, window ledges and all over our stuff in the basement. I asked them to use dropcloths, which they began doing but they shook out the cloths in my kitchen. There were large overcut holes in our walls, which they came back to patch after I sent pictures to their field supervisor. They also cut power to the outlet that powers our secondary refrigerator and spoiled over $500 worth of food.

The worst part of the experience was the horrible customer service I received from nearly everyone in their company. I called their L&I administrator, Jim H. We talked on the phone once where I explained my frustration over the amount of time it was taking and the lack of communication by the electricians on my job. He said he would talk with them and call me back but he never did even after I left messages for him.

After I threatened to contact BBB, I was contacted by their field supervisor, Joe H. He agreed to give me a 5% discount for all the issues we had with the under qualified electrician and how long it was taking to finish the job, as well as a $500 credit for the spoiled food. However, he has not returned any of my calls, texts or emails after I discovered they tacked on an additional $2000 above the bid price. Four months later, I am still waiting to get the final bill so I can pay the remainder, and finally be DONE with this company.

Worst customer service ever!!! I am telling everyone to avoid this company.

In regards to their reply to my review, they have absolutely not attempted to contact me to resolve any of my issues. I have phone logs and emails that show how many times I have contacted them with NO response. I did receive yet another bid on Dec 10th (which I already have multiple copies of) from their office staff after I left messages for Joe Harris yet he never returned my calls, texts or emails. I don't need any more bids folks! I need a final correct bill or invoice so I can pay you and be finished with your company!

Kevin from Brennan Heating was extremely good at explaining the importance of signing up for their yearly maintenance program. I have never been very good at doing these things on my own, and now l don’t need to worry about it.

HAD OUR FIRST MAINTNENANCE DONE ON OUR GENERAC GENERATOR AND IT WENT PERFECTLY. THE TECH TOOK HIA TIME AND DID A WONDERFUL JOB. HE WAS VERY POLITE & PROFESSIONAL. THE SERVICE WAS FREE BECAUSE OF A 2-YR FREE MAINTENANCE DEAL W/THE PURCHASE OF THE GENERATOR.

Reggie was AMAZING! He fixed the problem with my furnace very quickly, and he showed me a bunch of other things to look out for without any pressure, just education. My furnace is working again, and it could not have gone any better.

We had Reggie from Brennan heating out to service our A/C system. He was very skilled, got to the heart of the problem and explained everything including options. Everything is working
good now. My wife and I were most impressed with how professional and polite he was. My puppy nipped at him but
he took that in good humor. We like Reggie and will never consider any other service.
Peter & Wendy Butzerin

We installed heat pump over $15k through Costco in 2019. Guess what? It broke after 3 years and costed us $2k to repair. We keep having issue & now compressor is broke. They reached out and said will get back to me after discussing with their manager. No one ever called me back and no one answered my voicemail. Worst experience ever. I'm keep having to spend money on this. NOT WORTH IT.

Excellent service. DJ Huie was very knowledgeable on exactly what needed to be done, and did it. Installation was awesome. Would definitely use them again.

We went through Costco for a furnace/AC install and Brennan was the contractor they used. We recieved bids from Bob's and another local contractor with Brennan coming in at the middle of the bids but in our opinion, Brennan offered a better grade furnace and AC package so we choose Brennan for our project. I appreciated Paul and his honest approach as to what equipment we needed without upselling us yet at the same time, gave us options to consider with appropriate pricing. Paul is very knowledgable as to what he felt would work best for us and took the time to explan why. I will start this by saying that I am very picky about details so I was very involved on the install day and follow up visits where I made a list for Brennan of items to take care of. They showed up on time and where able to complete the install in a day and took care to protect the carpet and stairs covering them with drops while they worked, The install had a few hiccups such as a missunderstanding on where the lineset was to be installed on the house and a few items that neeeded adressed on the furnace on a return visit. I was nervous as to how Brennan would resolve my concerns on remaining issues but Paul followed through and Brennan took care of issues without excuses or arguments, I really appreciated the professionalism in the way Brennan resolved the issues. I gave Brennan four stars instead of five only because of miscommunication on the lineset placement on my house which couldn't be fixed. Jesus and his team where terrific in finalizing the reamining issues on the install by making sure all the details where addressed to my satisfaction. I would recommend Brennan for your heating and AC needs.

Three appointments had to be made from early September to mid December. After three appointments, the company got nothing done.

My edit one day later: I phoned Evergreen Air Duct Cleaning Company when it appeared that I was getting nowhere with Brennan. The guys at Evergreen showed up the next day. Got the job done, arriving in a very similar van. No problems.

After only 5 hours of no power, the crew got everything wired up. Here, Jefferson County PUD tech is reattaching our meter. The Brennan Electric team needed one more hour to complete the wiring and test the generator. I was surprised how quiet the generator was running at full load. Sounded like standing next to a Ford F150 with the engine idling. The final electrical inspection will be later this week but they are allowed to keep the generator hooked up and active in the mean time. We now officially have whole house backup.

One of our neighbors walked down to see what was going on and was impressed with the set up (said he had "generator envy"). He has a portable generator connected to a manual transfer switch.

Our generator waits 5 seconds after the power fails to confirm its not a power bump, the generator then cranks and runs 5 seconds to stabilize the power. So, a total of 10 seconds elapses before power is restored. The transfer from generator back to public utilities happens in a blink, almost unnoticeable.

We should get about 3 days of power running the generator at full load. We can extend to 5 days by only using essential items and skipping the electric range, electric dryer, etc. The two LP tanks are configured to allow two more tanks to be added for a total of 1,000 gallons (if we ever want to go that route).

Brennan Electric was a great company to work with. They provide turnkey service (electrical, gas, permitting, maintenance) and they communicate well and are very organized. They install about 30 generators a month throughout the greater Puget Sound area!!!

I recommend getting 3 quotes. Each of our three quotes were wildly different (pricing, type of generator, size of generator). Costco had the best deal which saved us $2,000. They also offered a 12 month, zero interest loan (no monthly payments but the balance is due at the 12 month mark). This will give me time to vacuum up overtime at the hospital to pay the $16,000 bill!