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JX Mini-Therm Residential Gas Fired Hyrdronic Boiler

Exceptional Value | High Performance
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.

Reliable Heating with a 20 Year Warranty
Energy Saving "Economy Mode" Built-In with the Mini-Therm JX Control
Environmentally Friendly
Simple Retrofit with Standard Tapping Locations
Longg Life Hybrid Heat Exchanger
Designed and Built at the Laars Headquarters in Rochester, NH USA

Benefits of Copper & Cast Iron

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 quck 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 and lighter than traditional cast iron boilers making installation and maintenance much easier

Low Loss Header System

Maintains the correct temperature rise (Delta-T) across the heat exchanger - offering improved performance and longer heat exchanger life
Protects the heat exchanger from low return water temperatures  (Economy Mode or Outdoor Reset)
System pump interrupt for anit-condensing feature
Allows for direct replacement of traditionally piped cast iron boilers
Reduces installation time resulting in savings

Benefits of Copper & Cast Iron

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 and lighter than traditional cast iron boilers making installation and maintenance much easier

Laars Low Loss Header System
Maintains the correct temperature rise (Delta-T) across the heat exchanger - offering improved performance and longer heat exchanger life
Protects the heat exchanger from low return water temperatures
Allows for direct replacement of traditionally piped cast iron boilers

Brochure
Installation Manual
Warranty 
User Manual
Displaying products 1 - 6 of 6 results
Laars JX075N Gas-Fired Residential Hydronic Boiler - 75 MBTU/h
Price: $1,467.34
Laars JX075N Gas-Fired Residential Hydronic Boiler - 75 MBTU/h
75,000 BTU Output - 84% eff.
1-1/4" Water Connections
3/4" Gas
Laars JX050N Gas-Fired Residential Hydronic Boiler - 50 MBTU/h
Price: $1,495.95
Laars JX050N Gas-Fired Residential Hydronic Boiler - 50 MBTU/h
50,000 BTU Output - 84% eff.
1-1/4" Water Connections
3/4" Gas
Laars JX100N Gas-Fired Residential Hydronic Boiler - 100 MBTU/h
Price: $1,616.21
Laars JX100N Gas-Fired Residential Hydronic Boiler - 100 MBTU/h
100,000 BTU Output - 84% eff.
1-1/4" Water Connections
3/4" Gas
Laars JX125N Gas-Fired Residential Hydronic Boiler - 125 MBTU/h
Price: $1,760.70
Laars JX125N Gas-Fired Residential Hydronic Boiler - 125 MBTU/h
125,000 BTU Output - 84% eff.
1-1/4" Water Connections
3/4" Gas
Laars JX150N Gas-Fired Residential Hydronic Boiler - 150 MBTU/h
Price: $1,874.97
Laars JX150N Gas-Fired Residential Hydronic Boiler - 150 MBTU/h
150,000 BTU Output - 84% eff.
1-1/4" Water Connections
3/4" Gas
Laars JX200N Gas-Fired Residential Hydronic Boiler - 200 MBTU/h
Price: $2,268.31
Laars JX200N Gas-Fired Residential Hydronic Boiler - 200 MBTU/h
200,000 BTU Output - 84% eff.
1-1/4" Water Connections
3/4" Gas
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