Brennan Heating, Air Conditioning, & Electric

Google Reviews for Brennan Heating, Air Conditioning, & Electric

Customer ratings shown here come from Google. They are separate from our editorial review above.

Recent Google Reviews

• DWdanny wright5.0We don't have a huge house. It was built in 1996 and about 18 months ago and decided if we're going to stay here, we should update a few things. The heat pump was working OK- one rebuild years back - but close to 30 years is reaching the avg. Service life of a heat pump/furnace. I originally got Brennan info at Costco, a company I trust. I was a bit anxious - no matter what, it was going to be a chunk of change. The sales rep who came to the house was a good guy. , Explained everything, discussed a few options and zero pressure. It was a big number (for us) but we went ahead. The install was flawless. There's a big difference. I can hear and feel a better system at work. The digital thermostat works well and no issues. Included in the purchase (we paid a bit extra) was a vent cleaning and three yearly maintenance check ups. I kept putting it off. Two rooms in the house are packed with stuff and I didn't want to move a lot of stuff to access vents. We're slowly downsizing; some physical challenges; unexpected job change; vacation; new puppy - whew! Even though it was past the scheduling point of a year, the Brennan folks said no problem. This morning a very friendly dispatcher called to verify we were home and the tech called to say he was on the way. He did the vent cleaning fast but good, explaining every thing. The second tech arrived for the maintenance and same deal - friendly and efficient. Its a lot of words that boils down to a total recommendation. Every single staffer was friendly and helpful. Like I said - this is a big investment for most of us. I think I made the right choice.August 2026Google
• VRvally rasajna tatavarthi1.0Worst service ever. Had to be without AC the whole summer due to their inefficiency to identify the problem. No call backs after escalating and rude reception when lodging a complaint. Still facing the issue with numerous calls, wait times and going in circles. The team do not have any notes from the prior technician, which makes their service terrible.August 2026Google
• GJGreg Jones1.0FRAUDULENT AND DECEPTIVE COMPANY. BEWARE. Wouldn’t stand by their tech’s misplacement of an air duct relocation. Recommended a $800 cooling system repair that a second opinion deemed 100% unnecessary. Filed a BBB complaint and working with Washington state L&I and Attorney General’s Consumer Protection division. There’s a special place in hell for these guys if they do this to some unsuspecting elderly person on a fixed income. Shameful.July 2026Google
• CDCecilia Dominguez1.0I had Brennan install a new furnace and heat pump in July 2017. Unfortunately, my experience since then has been disappointing. Just one week after installation, the system stopped working and required a service call while we were out of town. They fixed it pretty quickly. 2021, the fan motor and blade failed and had to be replaced during a stretch of weather that was over 90 degrees. The parts were under warranty, but I still had to pay labor costs. To minimize the number of people coming into my home, I specifically requested the same technician who had previously worked on the unit. I was told the appointment would need to be scheduled further out to accommodate that request, which I agreed to despite the heat. When the appointment day arrived, the technician who showed up was not the person I had requested. I ended up waiting longer for no reason while dealing with temperatures above 90 degrees. 2025, the thermostat failed during January when temperatures were freezing. I was told only a Lennox thermostat would work with the system, resulting in a replacement cost of about $1,000. It took roughly a week to get a service appointment and another week for the part to arrive. During that time, I had to call Brennan myself to find out whether the part had come in. 2025, I called to schedule maintenance because I never received the reminder calls I had received in the past. While waiting for the appointment, the A/C stopped working. Once again, the fan motor and blade had failed. The parts were covered under warranty, but I paid another service fee plus labor charges. Most recently, when I called in June 2026 to schedule maintenance, I was told the earliest appointment was July 31. I asked why I had not received a maintenance reminder and was told those are only provided to customers on a maintenance plan. After reviewing my account, the representative discovered that my previous visit had only been a repair and not a maintenance service. What frustrates me is that no technician informed me of that at the time, discussed any maintenance recommendations, or explained that my annual maintenance had not been performed. Since Brennan only performs maintenance annually, that meant my system went two years without a maintenance inspection, and I had no idea because no one communicated that to me. After I hung up from scheduling the July 31 appointment, I immediately started calling other HVAC companies because I no longer have confidence in Brennan's service. I spent approximately $20,000 on this furnace and heat pump system and expected better reliability, communication, and customer support. Instead, I've dealt with multiple breakdowns, repeated labor charges on warranty repairs, long waits during extreme weather, and poor communication regarding maintenance and service. For a company that installed and has serviced the system from the beginning, I expected a much higher level of customer care.June 2026Google
• FKFinn Kelln1.0Terrible Service and Horrible Company We are completely dissatisfied with our experience with Brennan and strongly warn others against using this company. Our family purchased an air conditioning system through Brennan for nearly $30,000, expecting professional workmanship, quality engineering, and long-term reliability. Instead, what we received was an installation that appeared rushed, careless, and completely lacking in proper design consideration. The hoses and wiring were run directly through the house with little regard for aesthetics, engineering fit, or overall quality of installation. It looked more like a temporary shortcut solution than a professionally installed high-end HVAC system. To make matters worse, the system failed after just 3 years and 9 days — literally nine days after the warranty expired. For a system of this price and supposed quality, this is completely unacceptable. When we contacted Brennan for support, the experience only deteriorated further. The technician sent to evaluate the system was sub-par and ultimately recommended using a sealant solution that would effectively shorten the lifespan of the unit rather than properly addressing the underlying issue. Instead of standing behind their work or offering meaningful support for a clearly premature failure, Brennan seemed more interested in pushing a temporary patch job and moving on. At every stage of this process, Brennan has demonstrated poor workmanship, poor customer service, and a complete lack of accountability. We deeply regret trusting this company with such a major investment in our home. We will absolutely be recommending to Costco that Brennan be removed as a service provider, as no customer spending this kind of money should be subjected to this level of incompetence and disregard.June 2026Google
• RRowdy2.0This review covers the installation and lifespan of a Lennox central air condition system I had installed by Brennan. In May 2016, I purchased the system via Costco and Brennan performed the install. When I purchased the system the salesman advised it should last about 20 years. The system was installed and immediately had problems. The first issue was the installed coil failed (system blew warm air) within two weeks of installation and had to be replaced. It took three visits for Brennan to figure out the coil was the problem. They initially replaced the compressor but that was not it. They ultimately had to send out “one of their best guys” who determined it was the coil. The coil ended up being replaced at no cost, but the repair was not quick. I think I was up and running by mid-June. Brennan was not in a big hurry to get me up and running. I had maintenance performed nearly every year which consisted of a tech checking the system, but they never cleaned the coil or anything so I am not sure how much maintenance was actually performed. The system performed well until I fired it up for the season at the end of May 2021. I noticed the system wasn’t cooling the home as quickly as usual. I scheduled a service call and Brennan sent out a tech a week or so later. I changed the furnace filter the day before the tech came out, and after checking the system, he believed the problem was the filter I had replaced (garbage went out day before and he never saw it – it was not dirty). In the days after he left the system ran again and I could tell nothing changed. I then called Brennan to send out a tech for the annual maintenance. The tech came out during at the end of June 2021 right in the middle of the infamous heat dome. I told him of the problems I was having and he determined the system was low on refrigerant. He actually replaced it at no cost which actually saved Brennan in keeping my business. It is important to note that Brennan would not combine the service call and the annual maintenance together so I had to schedule two separate appointments and pay for each. The 2022, I had Brennan perform annual maintenance and the same tech who came out during the heat dome advised the system was again low on refrigerant so there must be a micro leak. He topped of the system, which I had to pay for and is understandable, and the system ran fine for the summer. In 2023, I had Brennan perform annual maintenance and a different tech came out and determined the system was low on refrigerant so there was a leak. He topped of the system with refrigerant, which I had to pay for, and put dye into the system to detect the leak. The leak was not found. In 2024, I had Brennan perform annual maintenance and the last tech came out again and determined the system was low on refrigerant. He topped of the system with refrigerant, which I had to pay for, and tried to look for the leak but could not find one. He suspected it was the high pressure switch on my Lennox system, so he torqued it. In 2025, I had Brennan perform annual maintenance and the last tech came out again and everything appeared to be fine. In May 2026, I turned on my system for the season and it blew warm air. I immediately suspected the coil had failed since it reminded me of the issue when the system was first installed. I had Brennan perform a service call and indeed the coil had failed. It was still under warranty for a few more weeks, so the coil would be free but the cost for labor and refrigerant would be about $2,000. At this point, I just wanted the system out of my house. So this week I had a different company install a new air conditioning system, and a different brand.June 2026Google

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Reputation by Source

We show each source separately rather than blending them into a single score, because they measure different things.

• Google

  4.5/ 5

  2242 customer reviews

• TenBestFind

  Editorially reviewed

  Ranked #3 in Seattle hvac, September 2026

• Brennan Heating, Air Conditioning, & Electric
• Brennan Heating, Air Conditioning, & Electric
• Brennan Heating, Air Conditioning, & Electric

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  Updated September 2026

Brennan Heating, Air Conditioning, & Electric FAQs

• Is Brennan Heating licensed in Washington?

  Yes. Brennan lists HVAC license BRENNHA971R9 on its website, plus separate plumbing and electrical licenses. You can confirm each one on the Washington L&I Verify a Contractor tool.

• Does Brennan install systems bought through Costco?

  Yes. Several Google reviewers bought their heat pump or air conditioner through Costco and had Brennan do the installation.

• Is Brennan Heating actually in Seattle?

  Its main office is at 4601 South 134th Place with a Seattle mailing address, near the city's southern boundary, and it also has offices in Lynnwood and Lakewood.

• Is Brennan Heating, Air Conditioning, & Electric licensed and insured?

  We checked 0 of 5 credentials against the issuing authority. Verified items carry the date we checked; reported items are what the business told us and we could not independently confirm.

• What areas does Brennan Heating, Air Conditioning, & Electric serve?

  Seattle. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.

• Does Brennan Heating, Air Conditioning, & Electric offer emergency service?

  Yes, the company lists emergency availability. Response time depends on demand, and after a storm every company in the market is stretched.

• What warranty do they offer?

  Manufacturer equipment warranties apply; ask for Brennan's labor warranty terms in writing before signing.. There are usually two warranties on a job: the manufacturer covers materials, the contractor covers workmanship. Get both in writing and check whether the workmanship coverage transfers if you sell.

• How was this profile built?

  Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.

• Can a business pay to improve its profile?

  A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.