Unit Heaters

This collection offers a comprehensive range of unit heaters: compact, ceiling-hung systems that free up valuable floor space while delivering powerful, directional heat. 

From high-output gas-fired models to whisper-quiet electric and hydronic units, we cover every application and fuel type. Looking for low-glare comfort without ductwork?

Browse our Radiant Heaters collection for gentle infrared warmth.

Our catalog features sealed-combustion designs that vent exhaust safely outdoors, stainless heat exchangers for corrosion resistance, and multi-speed fans that balance throw with noise control. 

Need something purpose-built for larger maintenance bays? Our Tube Heaters extend up to 80 ft for even, draft-free coverage.

Searching for garage heat without the headache of open flames? Electric units give instant, fume-free warmth and pair perfectly with smart Thermostats. Prefer spot cooling when summer rolls in? Our Evaporative Coolers keep the same space comfortable year-round.

Key Capabilities

• BTU / kW Range: 3 kW – 400 kBTU
  

• Fuel Options: Natural gas, propane, electric resistance, hot-water coil

• Combustion: Sealed or power-vented for safe indoor air

• Air Throw: Up to 65 ft with adjustable louver fins

• Mounting: Ceiling, wall-bracket, or drop-rod kits

• Controls: Onboard line-voltage t-stats or 24 V relay integration
  

Ideal For

• Commercial garages & workshops

• Aircraft or equipment hangars

• Greenhouses & agriculture barns

• Retail stockrooms & loading docks

• Residential three-car garages and hobby shops
  

Browse Our Wider Range

• Radiant Heaters

• Tube Heaters

• Infrared Heaters

• Patio Heaters

• Evaporative Coolers

• Thermostats & Controls

Quick Spec Comparison

Top Brands We Carry

• Reznor Parts

• Trane

• York

• Carrier

• Lennox

• Williams Parts

FAQs

What’s the difference between gas and electric unit heaters?

Gas models deliver higher BTU output per dollar, while electric units excel where venting isn’t possible and boast near-silent operation.

Will these heaters work in a garage with a low ceiling?

Yes—select models include adjustable louvers that direct airflow horizontally to avoid hot spots.

How do I determine the correct size for a unit heater in my space?

Divide the building volume (ft³) by 200 to estimate the BTU for moderate climates; add 20% for areas below 20°F.

Do you offer corrosion-resistant options for wash bays?

Look for stainless steel exchangers or epoxy-coated casings in our Reznor and Lennox lines.

Can I integrate a smart thermostat?

All electric units and most gas models ship with 24V relay terminals, making them compatible with Wi-Fi thermostats and building automation systems.

Why Shop Unit Heaters at Snook & Aderton HVAC Supply?

• Broad, in-stock selection from 3 kW to 400 kBTU
  

• Authorized dealer for Carrier, Reznor, Trane, and more
  

• Fast, trackable shipping throughout the USA
  

• HVAC specialists available by phone and live chat
  

• Optional design & load-calculation services for complex projects