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"Excellent service quick but thorough! High quality work! Water heater install was great looks good!"

"The gentleman that came was very nice, He completed the service I requested and more. I needed my furnace cleaned and checked. He explained what he as doing and everything was great."

"Guardian Heating and Cooling was very professional putting in our new boiler system. Steve was on time, explained everything that was going on, answered any questions about the project, was efficient professionally, and left the area as if there was no work that had happened there. In my opinion an A+ service."

"Sparky was great.  He assessed the problems and fixed all of them in an efficient manner.  He really knows his stuff.  My track lighting was totally screwed up - he had to get up in the attic and run new wires and install a new switch.  He knocked it out of the park.  6 months later, all things that he worked on are working great.  Highly recommend his services."

"The new air condition was installed for my home. The service professionals: Kia’i A., Tyler W. and Austin M. were excellent. They were efficient, knowledgeable kind and polite. They answer my question Older units were removed and the new AC was installed. The certified electrician came also check everything and answer all my question. You have excellent people working for you. Thank you very much for your service 👍🥰"

"They came out and looked over the A/C unit. I told him it makes a very loud banging when it starts up and that the company who installed it told us that was normal and it was working fine. Once he was done cleaning the unit, he went to restart it and it tripped the breaker. So he took it apart and found that when it was installed, someone had pinched a wire, cutting the insulation and causing it to short out on the frame of the A/C unit. He fixed that, reassembled the unit and restarted it. It's still a loud start, but not nearly as loud as it was. He informed me that our A/C is a builder grade model and unfortunately it's not the best on the market so it's going to be louder than we would like. Once he was done working on the A/C, he came in and took a look at our furnace to make sure it wasn't hooked up wrong also. Definitely will be calling on Faithful again."

"Great company, got all my questions answered and the work was completed in a sensible amount of time. Would recommend to anyone."

"They were prompt and they were able to get it fixed quickly. Their pricing for the parts they used was expensive, but I was satisfied with their service."

"It went fine.  They were friendly.  There was no additional charge apart from the big deal but he said there were close to having an extra charge because the vent line was longer than expected but it was just in the parameter.  The scheduling was fine."

"The man who came to my house to describe the furnaces and help determine which one I wanted could not have been more wonderful. He was helpful and efficient. We had agreed on a week when the work would be done. The installers called and wanted to come a week earlier. I okayed it, but it wasn't the best day for me. They were nice and efficient. The new furnace appears to be exactly what I wanted. However, the new thermostat control was a different size and shape from the original one and they didn't patch the holes or repaint the edges--not a big deal but when I got a security system a few weeks ago, they did do all that finishing."