Hollis Heating and Cooling

Hollis Heating and Cooling has operated as a family-owned contractor for over 15 years, earning a perfect 5.00-star rating from 8 reviews across Lowell, Manchester, and surrounding communities in MA, ME, and NH. Fully licensed professionals serve both residential and light commercial customers with upfront pricing and no hidden fees, including 24/7 emergency response for heating and cooling crises.

What separates this contractor is a demonstrated depth of technical precision that goes beyond routine servicing. Trevor and the crew have handled multi-stage propane conversions that other installers missed for a decade, identified incorrect fuel pressure settings during standard maintenance, and completed full heat pump installations in roughly 3.5 days with clean, methodical workmanship. The team specializes in ductless mini split systems and offers transparent quotes before any work begins.

Seth Soos had owned his home for nine years under the assumption that the propane furnace had been properly converted from natural gas. During a routine service call, Trevor discovered the stage 2 components were never changed, corrected the fuel pressure for stage 1 heat, and watched the flame transform visually after adjustment. Impressed by that diagnostic work, Seth requested a heat pump quote and received several equipment options before signing. The installation took 3.5 days and Trevor followed up weeks later to confirm performance. May H, a realtor, reports that Trevor saved her money on a water heater repair while explaining every step, then followed up by caring enough to check in after the work was complete. Both clients received callbacks after the job finished.