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Claim This BusinessNet Zero Heating & Air Conditioning operates as a specialty HVAC contractor serving Billerica and Lincoln within Middlesex County, Massachusetts. The company holds NATE certification alongside dual distributor credentials as a Mitsubishi Diamond Elite Dealer and Bryant Factory Authorized Dealer, reflecting a commitment to manufacturer-backed expertise. With a perfect 5.0-star rating accumulated across 82 client reviews, the business has cultivated a reputation for responsive service and technical precision in heat pump conversions and ductless mini-split installations.
The contractor distinguishes itself through efficiency-focused solutions centered on high-performance heat pumps rather than conventional fossil-fuel systems. This preference aligns with homeowners seeking to reduce environmental impact and operational costs. The company backs all ductless mini-split and air conditioning installations with a three-year labor and material warranty, supplementing standard manufacturer coverage. Financing options and available rebates further lower the barrier for homeowners pursuing system upgrades.
Customer narratives reveal consistent themes of technical competence and accessibility. Thomas Walker experienced a same-day response after an overnight system failure caused by rodent damage to his condenser unit, with heat restored within hours. Kanna Kunchala's installation involved competition against three other bidders, with Net Zero winning the project by correctly sizing two heat pump systems to the client's exact needs rather than oversizing. The team, including technicians Brian, Chris, and Holly, completed the work punctually while addressing all questions throughout the process.
Across 82 reviews, the contractor maintains a perfect 5.0-star rating, with customers repeatedly praising responsiveness, technical knowledge, and courteous communication. Multiple reviewers specifically mention same-day emergency service, while several highlight the team's willingness to assist with issues outside their primary HVAC scope, including plumbing emergencies during extreme weather.
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| FridayToday | 8 AM–5 PM |
| Saturday | Closed |
Complete heat pump services including new installations, system repairs, replacements, and conversions from conventional heating systems.
Ductless system installation, maintenance, and repair for zoning comfort in older homes or targeted climate control.
AC maintenance, repair, and replacement covering tune-ups, diagnostics, and full system installations.
Furnace maintenance, repair services, and full replacement for traditional heating systems when needed.
Boiler installation and servicing for homeowners who prefer hydronic heating solutions.
Plumbing repairs, drain cleaning, water heater services, gasfitting, and water treatment system installation.
Air quality products and systems to improve home filtration and overall indoor environmental conditions.