Reliable support from a trusted local service team.
When winter cold settles in, or summer heat pushes your AC to its limit, HVAC issues can become a real problem for your home. Great Bison Heating & Cooling helps homeowners with heating and cooling concerns throughout the year. As your local HVAC contractor in Lewiston NY, we’ll find the source of the issue and help get your comfort back on track.
Our customers have a lot to say, and we're thankful for it. As of June 2026, we have a 5-out-of-5-star rating on Google with over 460 reviews from people in the area. Read their feedback to see what makes our team different.
A furnace replacement should not feel like a guess. We help homeowners choose a system suited to their home, then install new furnaces, replace aging units, handle gas furnace setups, recommend high-efficiency options, remove old equipment, connect thermostats, and help with emergency replacements when heating can’t wait.
A furnace that stops working can quickly make your home feel uncomfortable. Our furnace repair team checks the system from top to bottom, looking for pilot light concerns, blower motor issues, thermostat trouble, or unusual noises. We identify the root cause, complete the repair, and review safety before we go.
Our residential boiler installation service includes properly sized new units, replacement systems, and high-efficiency options for local homes. We calculate the heating load before installation, integrate radiant heating if needed, remove outdated equipment, test the new setup at startup, and help with emergency boiler swaps when time is important.
If your current AC is outdated or your home needs central air, our installation service can help you prepare before summer heat arrives. We install new systems, replace old units, recommend energy-efficient options, connect thermostats, and remove the previous equipment from your home.
A summer AC problem can leave your home feeling uncomfortable faster than expected. Our AC repair services inspect cooling issues, refrigerant leaks, frozen coils, compressor and capacitor concerns, thermostat trouble, airflow problems, and emergency breakdowns to help bring cool air back into your home.
Before the heat rolls in, AC maintenance helps make sure your cooling system is prepared for daily use. We clean coils, inspect equipment, replace filters, check refrigerant levels, test electrical components, calibrate thermostats, and review performance to help reduce unexpected problems later.
When ductwork is not part of your home, ductless HVAC installation can help you heat and cool the areas you use most. Our team installs quiet single-zone and multi-zone systems that provide room-by-room control and can offer lower energy use than many older systems.
When ducts do not reach a space well, mini-split installation can give that room dedicated comfort control. We install wall-mounted units in additions, converted areas, and rooms that need attention, then size, set up, and commission the system for efficient operation from day one.
Your duct system helps carry comfort through the home, but leaks and damage can get in the way. Our ductwork services include new duct installation, duct repairs, replacement sections, leak sealing, airflow balancing, remodel adjustments, and help with reducing uneven heating and cooling from room to room.
Nobody wants cold water when they are expecting a warm shower. Our water heater installation service helps homeowners upgrade to a system that fits their needs. We install gas and electric units, help with proper sizing, offer energy-efficient options, and haul away the old tank once the job is done.
Hot water should be ready when your household needs it, and service can help when the system starts struggling. We repair and maintain gas and electric water heaters, addressing leaks, heating element problems, thermostat trouble, and tank flushing to help the unit run more smoothly.
Heating in winter and cooling in summer from one system can make everyday comfort easier to manage. Our heat pump services include system installation, replacement, repair, and maintenance, with thermostat and control upgrades that help support year-round energy efficiency.
In Lewiston, NY, Great Bison Heating & Cooling recommends furnace maintenance before heavy heating use so safety controls, burners, airflow, and ignition can be checked.
In Lewiston, NY, uneven radiator heat may be caused by trapped air, valve issues, circulator problems, pressure changes, or system balancing needs.
In Lewiston, NY, AC repair may be needed for warm airflow, short cycling, loud noises, water leaks, weak airflow, or rising indoor humidity.
In Lewiston, NY, duct services from Great Bison Heating & Cooling can locate restrictions, disconnected runs, leaks, or return-air problems affecting airflow.
In Lewiston, NY, Great Bison Heating & Cooling can compare duct condition, room layout, comfort goals, and zoning needs to recommend the better cooling approach.

Winter comfort depends on a heating system that fits your home and your family’s needs. Our furnace service includes new installations, replacements, and upgrades, with gas and high-efficiency furnace options sized for residential spaces. We remove old systems, connect thermostats, and help with emergency replacements when your current unit stops working.
When your furnace is not keeping up, a careful inspection can help separate repairable issues from bigger concerns. Our technicians handle no-heat service, ignition trouble, pilot light issues, blower motor problems, odd noises, and mystery odors. After finding the issue, we test the system for safety and performance, and emergency repairs are available when your heat stops at an inconvenient time. For homes that use hot-water heat, the boiler should be sized for real household demand. We install and replace residential boilers, including high-efficiency options, and run load calculations to help avoid an overworked system.
In Lewiston, NY, Escarpment is a highly regarded residential area with scenic surroundings, established homes, and strong neighborhood appeal. Great Bison Heating & Cooling is an HVAC contractor offering furnace installation that helps homeowners improve comfort, efficiency, and cold-weather heating reliability.
In Lewiston, NY, Lewiston Heights offers desirable residential streets close to village amenities, dining, and local shops. Great Bison Heating & Cooling provides furnace installation for homeowners who want modern heating performance, dependable warmth, and improved efficiency during Western New York winters.
In Lewiston, NY, Dickersonville provides a quieter residential setting with rural character and access to the broader town community. Great Bison Heating & Cooling offers furnace installation that helps homeowners maintain balanced comfort, reliable performance, and efficient operation throughout the heating season.
When outdoor weather gets tough, your home should still feel good, and our team is here for you.