I am so glad I found Halo HVAC through Yelp! My AC stopped cooling in a heat wave and I had many…read moreother companies quoting me $200++ for diagnostics or unable/unwilling to come out for weeks. I went to Yelp looking for a better option and definitely found one! Halo was able to come out within a couple days of contacting them and the diagnostic fee was $89, which was to be applied to any work performed if needed. it turned out it was a tripped breaker they were able to reset and my system is cooling perfectly again... for $89!! The most notable and appreciated factor for me is they didn't come in trying to sell me service plans, upgrades to my system or accessories, or otherwise upsell me on a well maintained and well functioning older HVAC system. Even when I asked for a quote on a heat pump to take advantage of the rebates while they last, Halo didn't push me to pick the most expensive option or upsell me on a pricier type of system. And icing on the cake - despite a lot of in and out while working on figuring things out, my technician was constantly putting on and taking off booties to keep my house clean. It's a small token of respect that goes a long way, and I very much appreciate it! I'll be using Halo and referring them to friends and family in the future!

This company is highly responsive and highly professional. While we did not do business with them…read moredue to a friend being able to fix a small issue for us I can tell you this. They will be our 1st call for any and all major repairs in the future.

They were professional, quick, and their work was excellent…read more I had a faucet fail unexpectedly and they were able to come out within 36 hours, which I found met my needs. They were careful to ask whether I considered my situation an emergency and, since I did not, that timeline worked for me.

We have used this business off and on over the last 7 years and what I like most these days is that…read morewe have a really good understanding of my house and the issues that come up with it. I like that they track and document every service provided with photographs and that if they can send the same technician each time, they do so that person has a good memory of your situation with your home. They have always been prompt at returning calls and helping me figure out what I need. Even if their prices might be a wee bit high here and there, the peace of mind to know that we are being taken care of is worth it to me. I like knowing they have our house history, they have established a relationship with me over the years and I know that when they offer me options its not to just get all they can - there is a purposeful reason. If you are in a situation where you need an airtight service with a tracked repair history that you can look up in images etc, then this is a great place to call for assistance.

I would highly recommend Efficient Comfort for any HVAC needs! My parents experienced a valve leak…read morefrom their humidifier that was connected to their AC and heating system at my childhood home, and the team was incredibly professional and quick to get the issue resolved. They responded to my quote request within an hour and made scheduling easy. We contacted several other companies, but they were either more expensive or couldn't come out until the following day. Efficient Comfort was able to come the same day, diagnose the problem, and fix everything at a very reasonable price. The entire experience was smooth from start to finish. Their responsiveness, professionalism, and fair pricing really stood out. I highly recommend them to anyone looking for reliable HVAC service.

This is a great company to work with. Our boiler had gone out right after we receive our quote from…read moreJeremy for a new system. They were out in 2 days. Right before the 03/06/26 storm. Talk about just in the nick of time. Devon arrived first to start the removal of the old system, while hid partner Ruben went to pick up the new boiler. They worked solidly all day with nary a break. Clean, zero mess left behind. Small company (brother and sister run) with great prices. If needed, I will not hesitate to call them again.

When people go above and beyond, they deserve the recognition…read more In all transparency, True Heating and Cooling had done previous work on our tankless water heater for the past couple years - mainly just a normal maintenance. All good work, but my quibble was follow up on some outstanding issues (mainly with a knocking noise that they didn't seem to get to the bottom of and didn't follow up) which led me to explore other companies - which unfortunately were no where near as detailed or close (actually most further) from a solution and I came them another chance and I'm glad I did. Justin helped work through some more detailed troubleshooting and provided a solid quote (detailed and quick) for solutions in a quick manner. He listened and cared. He was knowledgeable and thorough. While not only getting the issues I had resolved, was also able to resolve other code and safety issues that stemmed from the original install of the boiler. I would highly recommend True to others and will also recommend to other neighbors within my condo complex that have similar setups and might need work. Thank you both Justin and Logan - appreciate the work. (It's also interesting that they are not listed on Navien's website or BBB accredited; this is where I looked for contact information for service as they a) certainly can work / service Navien products well and b) should deserve to be accredited with BBB. Other companies that I've consulted were on both sites and didn't provide as good of service)

Mark was here serving our furnaces and AC and did a great job, very professional and told us what…read morehe wanted to check out next year, and made couple suggestions. FAST EDDY OF Arvada

My water heater was leaking the next day after I returned home from a 2 weeks trip. I called CT…read moreHeating at 8 in the morning and spoke to Todd, he came out to my house at 10 and by noon I had a new water heater.

What a wonderful, prompt and thorough company. My husband…read morewas out of town, we had no heat. I called them at 8, Todd was here at 8:45 and found a tennis ball in our heating line. Fixed the issue and constructed it so if it happens again, it's much easier to repair. Best of all the price was very reasonable. I am sure the other bigger heating company would have charged twice the price and probably would have convinced me I needed a new furnace.

Recently, I needed repair services for a 1970's boiler for a baseboard heating system. The system…read morehad been randomly failing to turn on. Andy arrived, took one look at the system, and immediately identified the problem (corroded valve). He then efficiently fixed it in a reasonable amount of time, at a fair price. Than you, Andy! So grateful for the great service from Carroll Mechanical, for three different properties now over the past 2 years. When you find a knowledgeable, fair, quality contractor, you keep calling them. Carroll is my go-to for all HVAC, highly recommended!

CMS is now owned by Welzig. I really liked CMS for general service because they never tried to sell…read moreme anything, they just came and serviced what I have and kept it running in top shape. I hired Welzig once, and a CMS technician showed up to do the service. He did the work quickly and replaced my humidifier contactor pad for free, but then the selling started. Replace my perfectly good Honeywell thermostat with a smart controller ($500+) that uses forecasts from the internet instead of the house temperature to decide when to run. Clean the ducts for $1,000 (do they know about the ValPak $299 company?). Add a water alarm device for $500 (I already have one from a multipack I got at Costco for $20). Literally $10k in recommended "improvements", and they really really wanted me to sign up for a service membership. Sure I get my tune ups, but also a plumbing and electrical consult I don't need each year. I have no confidence whatsoever they wouldn't intentionally damage or fail to service my unit in order to get me to buy a new one. I'm a redneck engineer from the South. I'm used to chainsawing my way out of the neighborhood after hurricanes, building blast furnaces using old lawnmowers, and cobbling together whatever I'm wanting to make (chicken coops, rabbit hutches, fences, you name it) out of whatever scraps are laying around or free on Craigslist. I'm scrappier and more miserly than most, but for those like me who are inclined to open their condenser when it stops running instead of calling an HVAC company to spend $250 on diagnostics, this is not the company for you anymore.

Austin was dispatched to my house from a warranty company. After doing a incomplete diagnosis, he…read moremade the incorrect determination that the condenser coils were dirty and that caused the compressor to burn out. He didn't look at the evaporator coils inside or even put gauges on the system to see how much refrigerant was left. Had he done that, he would have seen the oil stained hole in the evaporator coil and there was very little refrigerant left in the system. The low pressure was the reason the compressor wouldn't kick on, it wasn't even burned out. Due to his incorrect diagnosis, the warranty company denied my claim. He actually called me a retard!

Service is great! Billing is weird and hard to understand. So if you're ok with not understanding…read morewhy you're being billed so much outside the insurance than this is the right spot