
Wall Furnaces
WILLIAMS 50,000 BTU/hr MONTEREY TOP-VENT GRAVITY WALL FURNACE NATURAL GAS HEATER
STANDARD FEATURES
- High-Efficiency Monterey Models
- No electricity required
- “Matchless” pilot igniter
- Easy installation
- Patented, side-relief opening draft hood design reduces flue gas temperature to minimize normal heat loss
- Natural and propane gas models (conversion kits available)
- Automatic temperature and safety controls
- Resettable vent-limit safety switch
- Thermostat included, may be wall- or cabinet- mounted
OPTIONAL FEATURES
- Optional labor warranty available2
2 Ask US Heating and Cooli9ng for details.

Central Heating
INFINITY® 98 GAS FURNACE WITH GREENSPEED™ INTELLIGENCE
STANDARD FEATURES
- Up to 98.5% AFUE heating efficiency
- Greenspeed intelligence for ideal comfort and energy savings
- Precise modulating gas valve capable of matching the heating needs of the home
- Variable-speed, ECM blower motor for ultimate comfort and ultra-quiet operation
- Ideal Humidity System® technology capable to aid heat pump or air conditioner summer dehumification
- SmartEvap™ technology works in concert with your cooling system to aid summer dehumidification
- ComfortFan™ technology allows fan-speed choices in “Constant ON” mode
- Comfort Heat Technology® feature intelligently stages heating cycles to reduce temperature swings and improve efficiency
- Infinity intelligence enables self-configuration and easy troubleshooting with Infinity control
- Fully insulated cabinet
- Advanced temperature control
- Includes air filter cabinet
- 10-year parts limited warranty1
- Lifetime heat exchanger limited warranty2
OPTIONAL FEATURES
- Optional labor warranty available3
1 To the original owner, when product is used in an owner-occupied residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details.
2 To the original owner, when product is used in an owner-occupied residence, a Lifetime heat exchanger parts limited warranty upon timely registration of your new equipment. Warranty period is reduced to 20-years (from Lifetime) on heat exchanger if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive the extended registered heat exchanger parts limited warranty period. See warranty certificate for details.
3 Ask US Heating and Cooling for details.

Heat Pumps
INFINITY® 20 HEAT PUMP WITH GREENSPEED® INTELLIGENCE
STANDARD FEATURES
- Up to 20.5 SEER cooling efficiency
- Up to 13 HSPF heating efficiency
- Sound: as low as 58 decibels1
- Greenspeed intelligence
- Optimal humidity and temperature control
- Variable-speed compressor operation for ultimate comfort and quiet
- Compressor sound blanket and Silencer System II™ design
- Filter drier system protection from moisture and contaminants
- Ideal Defrost heating operation with Infinity control
- WeatherArmor™ Ultra protection
- Non-ozone depleting Puron® refrigerant
- 10-year parts limited warranty2
OPTIONAL FEATURES
- Optional labor warranty available3
1 Quietest size within each model group during most common cooling operating condition.
2 To the original owner, when product is used in a residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details.
3 Ask US Heating and Cooling for details.