We had our old (43 years old!) furnace replaced. Sales person came on a Friday, told me our…read moreoptions, set us up with a credit company that put us on a payment plan, and scheduled the installation for Saturday-- the next day! No extra charge for work on a weekend! Salesman said the job would take 7 hours. It was done in less than 5. The installers were fast and friendly. 5 stars!

Very knowledgeable serviceman who answered all of our questions. Very professional yet with a…read morepersonal touch. Was truly interested in our specific concerns and questions. Did not take long to arrange an appointment. Offered suggestions on best way to set and regulate our furnace. After many years with another company that we've learned to distrust, a change was necessary and Donovan & Jorgensen definitely left us with a very good impression.

I just really appreciated what seems like an honest assessment. I was looking for a second opinion,…read morebecause two other companies had recommended major, costly repairs or replacement for my gas furnace. The Grenz folks came, carefully looked at the unit, and said, "If it were my furnace, I wouldn't do anything. It is running the way it's supposed to." This second opinion cost me something, naturally, but it also saved me between $5,500 and $19,500 (two quotes from the other two companies). Jim seems like a straight shooter. I'd recommend you give these folks a try.

He called me back and talked me through the fix. He did not wait to come out and wouldn't take any…read morepayment for his assistance. He clearly knew what he was doing. He was able to talk me through several troubleshooting exercises without seeing the gas fireplace itself. If I have any HVAC or fireplace needs in the future, I will definitely use Grenz

We had some issues going on with our 14 year-old furnace. I immediately looked at the reviews from…read moreO&W heating and cooling. And I was very impressed by all the reviews all five stars. So I thought we would give them a try. Excellent service! He arrived on time and showed me everything that was wrong. Turns out all it needed was a cleaning of some wires and a condensation tube was completely frozen which he took care of immediately. He also took the time to discuss with me of something that needed to be done in the future regarding our unit. Omer was extremely trustworthy and honest! Also the price was extremely reasonable!!! My husband and I were extremely happy with this company and will definitely use them in the future as you should too.

Fully appreciate all the amazing and high quality service! From a new water heater to a new…read morefurnace, it's been nothing but outstanding service!

Natalie Gentz came to do annual maintenance on our furnace. She came on time and worked quickly…read moreand efficiently. Highly recommend. Thank you!

Nimmer has been very helpful and flexible with services, when my furnace blower was dying and with…read morereplacing the furnaces and ac's. The technicians have gone above and beyond, especially Pat and Josh. My house is crazy, and it presented problems that weren't expected, and they came up with solutions to those problems. They have been wonderful to deal with (office staff Malinda and Beth, and Brian who gave me a quote for new units as well as Pat and Josh). I highly recommend them.

Top notch, professional service…read more Seider came recommended by both our realtor and the former owner of our home. Unfortunately, our first interaction came due to near carbon monoxide poisoning. We awoke in the wee hours if the am to the lights and sirens of the fire dept arriving because our CO monitors had gone off. Seider was quick to arrived during a huge snowstorm with an emergency weekend call. The corrected a disconnected outlet/exhaust from.our boiler, and were prompt with arranging a follow up service call to correct the issue that caused the exhaust to come off. An issue with the sparking mechanism was causing gas to build up in the unit, from what I could gather. Our technician seems knowledgeable about our unit, and had all of the parts and tools he needed to diagnose and repair it. The prices seemed fair, things were explained well and a detailed invoice was provided. Despite high demand during a major storm, they were able to correct our immediate safety issue in a timely fashion. We felt well cared for, and would definitely use them again.

Addition - After Making this post, the Owner did reach out…read moreto me and apologized for the actions of some of the other employees, refunded more then half of the money, and came and fixed the electrical to that which was originally agreed to. The Owner Made it Right. Notes to the Owner: Bart that showed up today, was professional. He was Apologetic for what had happened up until this point. And cleaned up the previous mess that had even been left by Joe and Dan. This is how management should have been, and should be. Even when Ben (The master electrician/Manager showed up today) he was making excuses for his actions. That too many people message him and it's easy to forget about something. This isn't the paying customer's problem. If you make a promise to a customer, and you don't keep it, you've messed up. Original Post - If you want timely response. Don't use Seider. If you want the work done that was agreed to. Don't use Seider. If you want Employees Fighting in your house. Don't use Seider. I have had a series of interactions that left me not really wanting to work with the company. After Rude employees, unprofessional behavior, and taking forever to get me scheduled, I would recommend going to another business. First interaction was fairly strange and unprofessional. I was contacted after submitting a form, asking me to reach out to schedule service with Ben, their master electrician, on August 3rd. Upon reaching out to him, I was questioned as to why I was calling this number, who gave me the number, and didn't help schedule. I had to reach back out to the scheduling person that told me to call Ben to get it on the calendar. I had a guy come out for the initial investigation on Friday August 7th, and was told that I can call over to get it scheduled, and they will make it a priority, because the electricity was out in my bathroom. Upon calling to try and get scheduled, the scheduling person stated they would need his paper work in order to schedule me, and they would reach out on Monday. He asked me at that time if I wanted my bathrooms vanity light and the fan and heating lamp on seperate switches, which I stated yes. They didn't. I waited giving the company benefit of the doubt (Employee stated they were fairly busy). Friday the 14th of August I reached out for an update, got the run around because the scheduling person wasn't there. I had to call back again, and again, and again, before they FINALLY got back to me August 24th (17 Days later --- WOOO Priority) to get me scheduled for September 1st. The two guys that were working on my house on September 1st were shouting at eachother, calling eachother names, criticizing what and how they were doing the work, one of them threatened to stab the other, threw things down the stairs, and didn't install the vanity light and fan and heating lamp on seperate switches. I rarely leave bad reviews without talking to management, and attempted to get this fixed. They stated they would get back to me that same day about a resolution (IE, either some money back or getting the switch situation fixed.) That was September 2nd. One of the two employees (Joe) Called back to apologize for his less then professional attitude the day of, but As of today (September 14th - almost two weeks later) Management still has not done anything to resolve the issue.

I needed to have a completely new central air unit installed. There were vehicle complications,…read morehowever, they were still determined to get it handled. They checked on the unit two weeks after the install. Their quote was cheaper than others I called. I'd like to personally thank Briar and Alex for all their help and patience.

Very disappointed messaged them many times to get my central air units up and running for 2026…read morecause they put them in 2025 but couldn't finish the job due to electric issues but that all should have been checked out prior to even talking about central air units. Now I have hire another company to get my units up in running. Plus hire a lawyer for them not finishing what they started. Very disappointed.

It's mid-December and the temperature is dropping to zero tonight, so of course our radiant heat…read moreboiler pump started making a horrible noise. I called Gross Heating on Monday to have someone come out asap. I was told Wednesday morning was the soonest they could make it. I was reluctant to call another company because in the past I had a bad experience with another. The last time Gross came out, they did a great job, so I called them back and said okay to Wednesday. They said they could actually send someone out Tuesday, late in the afternoon. The technician came out and apologized, saying this job may take more time than we have today and run into a lot of overtime. So, a new appointment was set up with another tech for Wednesday morning. In a way I'm glad this happened because the new tech was excellent in every way. He had the part I needed on his truck and had everything completed at noon. While he was there, our daughter called saying you won't believe this, but my boiler stopped working and I have no heat. Gross had anticipated the tech would be at my house the entire day. I asked if we could go over to her house to take a look at her boiler. Gross said okay, so off we went. She needed a new pump motor, which luckily he also had on his truck. In conclusion, both of our heating systems were fixed in the same day and at what I feel was a reasonable price. I trust Gross Heating and wouldn't use anyone else.

Once again, Gross Heating to the rescue! While they didn't remove the squirrel from my furnace,…read morethey dealt promptly with the aftermath. The owner, Randy responded to my emergency call where we determined I didn't need an immediate service call. The next morning Mike , the technician, repaired the damage and even tried to determine the squirrels entrance point. Competent, professional and polite- like all Gross employees- Mike determined it had to be the chimney. I don't know why anyone would call any other company! Thank you Randy and Mike. BTW, the squirrel lived!!

Nordic air fixed my thermostat problem with the utmost professionalism, and super quick to boot! 10…read moreout of 10 would recommend, great value as well.

Trevor arrived on time as scheduled (Saturday); provided detailed attention and testing to our…read morefurnace and humidifier units to prep for winter; was personable and professional; explained how the units function seasonally and showed us how to change out filters. Fair pricing. Without a doubt he's our guy for bi-annual service.

We had to have a furnace repair and also air conditioner install done. They arrived promptly…read more professional,and cleaned up afterwards. The charges were affordable. We will certainly use them again.

Kyle was extremely informative. he did his work and was gone promptly. Good value for the money.read more