HVAC reviews in Portland, Oregon

Installed air conditioning at my house, such a big difference in our home now!

Great service and quick repair, very professional and polite technicians. They took care of business.

Furnace fixed, tech was quick and nice. Recommended a maintenance, very happy!

Service performed on our air conditioning system, we now finally have great cold air!

The only AC company I trust. They've always taken great care of us.

They responded quickly when our furnace stopped working and had heat restored the same night. Truly grateful for the quick turnaround.

Russ came out to our home and we honestly were so impressed, he found our issue so quick and it was pretty bad. He gave us a few options and we chose a new system, next day we had it installed. 10/10

Our A/C broke on a day forecasted to hit 100 degrees. Sub Zero squeezed us into their busy day. Our tech was great and worked efficiently, keeping me up to speed on what was happening. I don't even think it took a full hour, and now we have A/C again! Will call them for all our HVAC needs moving forward

Great experience dealing with sub zero temp control, they were very honest and friendly. Never experienced great service like this before. Technician Mike walked me through how my system operates , gave me pointers of things I can look out for, just was very genuine and kind. Love a local honest company. 5 stars.

Installed a new air conditioning system at our home and furnace , we’ve used other companies before but sub zero is honestly such an awesome company! Old school straight shooters, they take care of business!

We had another company come out when our air conditioning stopped working, and they told us we needed to replace the entire system. It didn’t sit right, so we called Sub Zero Temp Control for a second opinion. They took the time to diagnose the actual issue and offered us a repair option instead. We went with the repair and everything is working perfectly now. Honest, knowledgeable, and saved us thousands! We highly recommend them!

We had our Heat pump stop working at night, called sub zero temp control and the office lady was very sweet and helped us get on schedule. The technician was on time and was very helpful. Was patient and answered all my questions, taught me about my system and made helpful recommendations to make it last longer. Repaired same day, very grateful!

Mike was a very helpful and respectful with our issues, he taught us about our system and showed where our filter location is. Our home is a lot more comfortable now.

We’ve had an old air conditioner that’s been barely hanging on for years, and Sub Zero Temp Control has helped us keep it running with timely repairs whenever it acted up. When it finally gave out for good, we decided it was time to upgrade to something more efficient. The team at Sub Zero gave us several options, explained everything clearly, and helped us choose the right system for our home and budget. They showed up the very next day and had the new system installed quickly and professionally. Everything is working perfectly, and we’re already noticing the difference. Highly recommend Sub Zero for their honesty, speed, and top-notch service!

We recently worked with Sub Zero Temp Control to replace our aging electric radiant heat system with a modern ducted heat pump, and we couldn’t be happier with the results. From start to finish, the experience was smooth, professional, and exceeded our expectations.

The team at Sub Zero was incredibly knowledgeable and took the time to explain all our options in detail. We were initially unsure about moving away from radiant heat, but they helped us understand the long-term benefits of a heat pump system—greater energy efficiency, better climate control year-round, and lower utility costs.

Installation was completed on schedule with minimal disruption to our home. The crew was punctual, respectful, and left everything spotless once the job was done. The ductwork was thoughtfully installed and blends seamlessly with our home’s layout.

Now that the system is up and running, we’ve noticed a huge improvement in comfort and air quality. The heat pump provides consistent warmth in the winter and effective cooling in the summer—something our old system couldn’t manage. We’re also looking forward to the energy savings as the seasons change.

If you’re considering a home heating or cooling upgrade, we highly recommend Sub Zero Temp Control. Their professionalism, quality of work, and customer service set them apart.

We had Sub Zero Temp Control install a new air conditioner and gas furnace for our home. Our old system was outdated and not working well anymore. The team was very professional and explained all of our options in a way that was easy to understand. They helped us choose the right system for our house and made sure everything was done properly. The installation went smooth, and now our heating and cooling works perfectly. We’re really happy with the service and would definitely recommend them to anyone needing HVAC work.

Got a fast last minute booking to fix our heating. All parts were on Micheal's van for our trane gas furnace. Explanation of the situation was very great, honestly very happy.

We’ve always used a huge company for our heating and cooling needs, but after they all get bought out from private equity firms, they just get money greedy, and don’t care about their customers. We’ve started to use Sub Zero Temp Control and they genuinely care about customers. Being in Portland, Oregon is difficult to find someone trustworthy. A well family oriented, genuine company. Didn’t even feel any need to go get a bunch of quotes, just felt they were the right fit for our family for the next 20+ years.

I have been with MacDonald Miller just over a year and it is a great place to be and getting better everyday!

Top-tier Mechanical HVAC Contractor. Sheetmetal, electrical, plumbing and building controls services with locations all over the PNW. The best people with the most industry experience to serve the customer.

Thomas and Harley have been our service tecks for MacDonald Miller. Great Friend and they know there stuff. Recommend this team for your Heating and Air conditioning needs.