LIC#7271474Family Owned · Est. 2020Boise, ID
Gas furnaces, heat pumps, and full system replacements installed by a family-owned crew. Code-clean, energy-smart, and warm before the first snow.
Idaho winters don't mess around. When nighttime temperatures drop below zero in January and February, your heating system is the one piece of equipment that absolutely cannot fail. Mears Mechanical installs gas furnaces, heat pumps, dual-fuel systems, and electric heating equipment for homes and businesses across the Treasure Valley — sized correctly, vented safely, and built to handle the coldest nights Boise throws at you.
We work with all major equipment manufacturers including Lennox, Carrier, Trane, Goodman, Daikin, Bryant, and Rheem. Whether you're replacing a 25-year-old furnace that's finally given out or designing a heating system for a new build, we approach every installation with proper engineering — not guesswork.
Every heating installation begins with a thorough assessment of your home's heat loss characteristics. We calculate based on insulation R-values, window U-factors, air infiltration rates, duct losses, and the local heating design temperature for the Boise area (which is around 4°F). This determines the BTU output your system actually needs. Oversizing a furnace wastes gas, creates uncomfortable temperature swings, and shortens equipment life. We get it right the first time.
For gas furnace installations, we handle everything: gas line sizing verification, combustion air requirements, flue venting (whether standard or high-efficiency PVC), condensate drainage for 90%+ AFUE units, electrical connections, and thermostat wiring. We test combustion with analyzers to verify safe CO levels and proper gas pressure at the manifold.
Heat pump installations include proper refrigerant line sizing, defrost board configuration for Idaho's cold climate, backup heat staging, and thermostat programming for efficient changeover points. For homeowners who want the efficiency of a heat pump with the reliability of gas backup, we install dual-fuel systems that automatically switch between electric and gas heating based on outdoor temperature.
We also inspect and address ductwork during every furnace install. A high-efficiency furnace connected to leaky trunk lines and crushed flex runs in the crawlspace will never deliver its rated performance. If your ducts need sealing, resizing, or replacing, we handle it as part of the project.
All installations include permit coordination, code-compliant work, manufacturer warranty registration, and a full system walkthrough so you understand operation and maintenance requirements.
Free estimates · No pressure · Same-day callbacks
We evaluate your home's insulation, windows, air sealing, duct system, and existing equipment to calculate exact heating requirements for Idaho's climate.
We present furnace or heat pump options at multiple efficiency levels with clear pricing. We explain the payback period for higher-efficiency equipment so you can make an informed decision.
Our crew handles gas lines, venting, electrical, condensate, duct connections, and thermostat setup. Most residential furnace replacements complete in one day.
We run combustion analysis, verify gas pressure, check temperature rise across the heat exchanger, test safety controls, and confirm proper airflow before signing off.
A standard furnace replacement typically takes one day — around 6 to 10 hours depending on venting changes and duct modifications. New construction or system conversions may require two days.
A 90%+ AFUE furnace costs more upfront but uses significantly less gas over its lifetime. In Idaho's climate with long heating seasons, the payback period is usually 4 to 6 years. We'll run the numbers for your specific situation during the estimate.
Modern cold-climate heat pumps operate efficiently down to -10°F or lower. For the Treasure Valley, a heat pump with electric or gas backup covers the full winter comfortably. We size the backup heat to handle the coldest design days.
Yes. Removal and disposal of your existing equipment is included in every installation quote. We handle everything — you don't need to arrange separate hauling.
Call us directly or request a free quote online. Same crew on the phone, same crew at your door.
