Get matched with top boiler installation pros in Duvall, WA

"Quick and efficient. Brad and Rob did a quick and clean install. We had a split AC in place and they got their electrician out quickly and he made the fix in the electrical panel. They sales rep had a bit of a problem with bringing up the financing on his computer, but, it all worked out."

"Ken went above and beyond on making sure that our install went flawlessly. He navigated through PSE issuers that could have become serious with our gas being shot off from PSE. Best customer service feasible!!!!"

"Mark and his guys helped us install a new AC last summer. They arrived on time and did a great job! So when I was looking for someone to do the maintenance of our furnace, I called them. Todd went above and beyond my expectations. He finished the job and even helped fix my hinge. Both Mark and Todd strike me as very genuine people. And I would definitely hire them again!"

"Jane's replaced my 20-year old Munchkin boiler with a super efficient, modern Rinnai. Everyone was a joy to deal with. Service was excellent. Darian, who scheduled and arranged the replacement, and Greg and Oscar (who did the work) were fantastic. Excellent service, especially since I live on Lopez Island, which is not easy to get to. Competent, good-natured, hard-working, nice folks."

"From the friendly phone call scheduling the service to the urgently needed installation of a new hot water heater, the customer service was excellent. All steps were explained and our questions were answered. Well done!"

"Darrick came out when no one else could and went through my Furnace and Air conditioner. The furnace was fine but found a potential problem with the air conditioner and went out of his way to get the part and fix it right away. I am now looking at having them install a new Thermostat for me. I Highly recommend them and would use them for all my needs."

"It went great, the heat pump and furnace have worked well, they installed a Bryant system that has done great over the past few years, house is cool in summer and warm in winter, I have no complaints."

"I had my furnace repaired & a new water heater installed. Father & son were professional, friendly & performed all the work with technical expertise. Explained & showed my everything. I received a fair price for all the work done. I would highly recommend this wonderful team for any HVAC work you need done. I'm very pleased."

"Starting with the sales process, Nate was informative and great. Could've sold me a more expensive replacement system, but instead identifies how my current system cod be retrofitted with a heat pump. That sold me on G&S right there. Everything from the initial install review, the office staff working with my lender, to Izaak and the install and electrical teams, was punctual, informative and professional. I've had several bad experiences with other contractors, but I would confidently recommend G&S for any job and plan to use them again for a generator switch install. Good people with a good business. Thank you G&S!"

"We'd used them four years ago to replace our windows. They were about 40% the cost of Renewal By Andersen for the same Andersen windows, were professional and courteous throughout the process, and we haven't had a single problem since. So when we wanted to put in a heat pump system for efficient heating and cooling they were high on our list. We got four bids, and once again they were the least expensive, in this case by a 30% margin. They explained our options well, came up with some creative solutions (we're an old house with old vent-work which they bypassed for the ductless pumps but used for a top quality air filter), and did the job quickly and efficiently. They've checked back a couple of times since to make sure everything is ok, which it is, and it's been really nice to heat our bedroom on some cold nights and cool my western facing home office on some sunny afternoons). When the permit inspector asked before they came over who our installer is and I told them, they said "They do really good work." Definitely recommend them to others and in fact already have."