Real results from real homeowners.

"They found air leaks we had no idea existed. Our heating bill dropped 30% that first winter. The crew was fast, clean, and professional. Best money we ever spent on our home."

"I expected to spend weeks dealing with rebate paperwork. They handled everything. The check from Efficiency Maine showed up in six weeks. I didn't lift a finger."

"The thermal imaging showed exactly where heat was escaping — you could literally see it on the screen. They fixed everything in two days. Our upstairs is finally comfortable."

"We had three different contractors give us quotes. SGH was the only one that actually audited the house first and showed us data. Everyone else was guessing. Night and day difference."

"We got heat pumps and insulation done at the same time. They coordinated everything so we only had to deal with one crew. Rebates covered almost a third of the cost."

"Our 1920s farmhouse was impossible to heat. After they air sealed and insulated, our oil usage dropped by over 40%. We should have done this years ago."

"As a builder, I need subs who show up on time and do the work right. SGH has been my insulation and testing crew for three years now. Zero callbacks."

"The blower door test before and after told the whole story. Our home went from very leaky to tight. The difference in comfort is immediate — no more drafts."

"Professional from start to finish. They explained what they were doing and why. No upselling, no pressure. Just straightforward work and honest advice."