HVAC reviews in Fort Collins, Colorado

I received my first plumbing maintenance with Andy from Welzig, and what a great experience. Andy was through with his inspection and pointed out a couple issues that needed to be addressed. I'm really glad Welzig now has a separate plumbing service to provide the annual servicing of the hot water heater and to check things out in general. This was a much better experience versus having an HVAC tech trying to do the preventive maintenance for plumbing.

Ruben was terrific. Patient, thorough and reassuring. He was the reason I hired Welzig for the tough job of replacing the sewer pipes below my concrete basement floor. The two gentlemen who did the pipe removal and replacement were also excellent. They explained what was happening through out the procedure and tidied up well. Very Satisfied!

I called Welzig about an alert our thermostat was giving. They sent a technician, Jonathan Sysum, first thing next day. Jonathan was friendly, efficient and there was no charge!

Mark was a very professional and knowledgeable young man. We very much enjoyed having him in our home. He performed our annual furnace check and winterized our Breeze Aire evaporative cooler. Great service as always.

Andy did a great job. He was so detail oriented to assure our plumbing system was in good shape. He did a great job descaling our tankless water heater. Will definitely use Welzig for all our future plumbing needs.

Had my 15 year old water heater go down the day before thanksgiving, where I would be hosting ten people. I didn't find out until 2pm on Wednesday. From the wonderful people at the office that got my ticket in and someone headed my way 10 minutes. To Jerry my plumber, Welzig was fantastic. Jerry showed up Thanksgiving morning at 8 and had the new one installed by 930, old one hauled out, and hot water flowing by 1030. Awesome flat pricing as well. I cannot stress enough how much me and my wife are grateful for the whole team at Welzig, but ESPECIALLY JERRY YOU'RE THE BEST BROTHER!

First, all of my communication with the office was efficient and clear, so helpful. They also were very responsive to my request about timing. Their technician Andy who came out was friendly, professional, efficient, and very thorough. He explained everything to me very clearly and patiently. Pretty much exactly the kind of experience I hope to have with this kind of company.

My technician arrived near the beginning of my 4-hour time slot (always nice), was thoughtful, capable, and took photos to verify and explain his suggestion of two further services I might want to consider to try to prolong the remaining lifespan of the unit (without a hard sell).

We just had our favorite plumber, Jon, from Welzig Plumbing come to the house to do some work for us, and as always, he was amazing! He’s incredibly skilled at what he does and takes the time to explain everything clearly. Jon is not only professional and knowledgeable but also has the best personality — it’s always a pleasure to see him. We truly appreciate his excellent work and friendly attitude every time he comes by. Highly recommend Jon and Welzig to anyone looking for a top-notch plumber

Cassy at Welzig has done a great job for me! I will definitely do business with Welzig again and will recommend their services!

Travis and Anthony installed both my furnace and air conditioner units. They were polite, knowledgeable, and efficient. Even though they ran into some challenges with the air conditioner, they remained patient and pleasant. They cleaned up after themselves before they left each day. Again, I would recommend Welzig for installing your HVAC appliances, especially Travis and Anthony!

James and Casey did a great job troubleshooting our 25-year-old, idiosyncratic radiant heat system. They identified valves and parts that needed to be replaced and were extremely knowledgeable. I appreciated their willingness to patiently explain to new homeowners the basics of our system. Casey gave us a thorough breakdown of pricing on a new boiler, including tradeoffs with different models. Welzig is a highly professional operation and we feel lucky to be able to work with them, given that we live at 8500 ft.

Jerry came out to fix a leak under the sink and did a great job!

Kody came out for an estimate for a water heater replacement. He was polite and knowledgeable. He gave me detailed information of 3 choices with prices and explanations. While he was here we noticed my drain was clogged! He quickly unclogged it and left no mess behind . Very pleased with the service.

I had a great experience with Jesse Norris when you came to do my plumbing system inspection. He was thorough, attentive and explained everything he did thoroughly. I would definitely recommend him and Welzig.

We’ve been using Welzig for many, many years. They always have excellent service and very knowledgeable, friendly, and timely folks working on whatever issue we have. They helped our sad furnace limp along for years until we were ready to buy a new system, and I am glad I do the yearly maintenance on our water heater, since we have a ton of iron and minerals in our well water.

Jerry came out to fix a leak on our home humidifier, and he was fantastic from start to finish. He was incredibly friendly and professional, took the time to explain what he was doing, and even shared some great plumbing best practices to help us prevent issues down the road. The repair was quick, efficient, and done right. He treated our home with respect and left the area spotless.

Highly recommend Jerry and the Welzig team. It’s rare to find someone so knowledgeable, courteous, and thorough!

Amazing service. Jonathan came right on time. He put on booties before he came inside. Furnace would not start up and the house was cold. He promptly diagnosed the flame sensor was dirty and cleaned it. He checked all the connections and made sure everything looked good. Professional and pleasant.

Outstanding experience from start to finish. Casey in sales spent over an hour patiently answering all my questions, which made me feel confident moving forward. Cassy did a great job aligning the claims with the offer, ensuring everything was seamless.

Installation happened just one day after I signed the contract — incredibly efficient. Saul and his colleague were professional and thorough. I especially appreciated that Welzig sent a senior engineer; Saul has been with the company for 15 years, and his expertise showed.

They handled the permit process, and the inspector came promptly and approved the work. And the small cooler with cookies? A thoughtful touch that truly made the experience feel personal.

Well done, Welzig — highly recommended!

So glad that I have subscribed to Welzig Comfort Club program. They recommended an inspection of my Hot Water Heater and plumbing throughout our home. The pressure relief valve needed to be replaced after 5-yrs due to corrosion of the anode rod.

We had the shutoff valves replaced to use a 1/4 turn valve to avoid any future issues with water leaks in the bathrooms. Preventative action as we are in our retirement years and plumbing can always be tricky with leaks.

The biggest benefit of this service was when we learned that the reason for the garbage disposal performing so poorly has been due to improper plumbing due to a kitchen remodel done years ago. We had a deep-sink installed with the granite countertop and that crew retrofitted the plumbing and did not inform me that this was required. It was a challenging project to redirect the pipes but worth the price to have this completed since it was not to code.

The professionalism of the 3 plumbers that helped resolve our plumbing issues was exceptional. They were very attentive to details on what was needed.

Our furnace stopped working sometime Saturday night we called them Sunday to see when they could get out to look at it. The earliest they could get here was Tuesday afternoon, not much we could do because everybody else was further out. We got up Monday morning and got ready for the day then got a call saying they could get us in around an hour or so, we were happy about that! About 5 minutes later I got a text saying Jonathan the tech was 15 minutes away from the house, even better we thought! He arrived and was totally professional and ready to work, only had to back to his van once for a part. In no time at all he had the furnace up and running, it was a simple fix and made it a minimal change too. I would recommend this company and tech to anyone and everyone I come in contact with, friendly, professional and caring! Thank you so much.

We have used Welzig for all of our HVAC needs for years.. For many reasons. Foremost is the Quality of service and very pleasant employees. Maybe they aren't the cheapest but I honestly believe they are the best along the Front Range of Colorado.
Last night my furnace bit the dust at 2:00 am... called their answering service and they had a service man here by 9:00AM.
Kudos to James Matheny... awesome technician, very pleasant and courteous. Thanks Welzig

Jessie did a plumbing inspection of my house as a part of the membership program. He was very thorough and took lots of pictures. Then he explained every issue in a way I understood, often showing me. I learned a lot and know what I need to in order to make decisions. Also, he’s a very interesting and friendly guy, and I appreciate his helpful, educational approach! Thank you.