Brochure

The Mini-Therm JX has a unique, field-proven heat exchanger design that
intelligently combines finned copper tubing with cast iron “wet walls” to
create a perfect balance of quick heat transfer and stored heat:
• Copper transfers heat up to 7x faster than cast iron for a faster
heating response
• Cast iron wet walls store excess heat to minimize short cycling -
increasing efficiency and heat exchanger life
• Mini-Therm JX is smaller & lighter than traditional cast iron boilers
making installation and maintenance much easier
The Laars Mini-Therm JX is a reliable gas-fired residential boiler with plenty of capacity to keep even the
largest home comfortable on the coldest days. The compact boiler has an efficient low-mass heat exchanger
and a super-quick heating response to deliver years of warmth and comfort to your home.
PROVEN INNOVATION
COMBINED BENEFITS OF COPPER & CAST IRON
Reliable Heating with a 20 Year Warranty
Field proven long-life heat exchanger design offers
dependable performance, year after year
Energy Saving “Economy Mode” Built-In
Economy mode optimizes fuel use and reduces
energy bills over time by tracking a home’s heat use
pattern and adjusting boiler water temperature, up
or down, as needed
Environmentally Friendly
Reduced fuel use and lower emission levels as
compared to older, low efficient boilers
Easy to Install and Maintain
New or retrofit, the Mini-Therm meets the need with
an impressive array of built in features and reliable
field proven components
Long Life Hybrid Heat Exchanger
The right combination of copper and cast-iron
construction results in a light weight, responsive,
and long lasting heat exchanger
Designed and Built at the Laars Headquarters
in Rochester, NH USA
LAARS MINI-THERM JX