SUPER HOT INTERGAS WALL HUNG, HIGH-EFFICIENCY GAS 
BOILER WITH COMBINATION CENTRAL HEATING AND DOMESTIC HOT WATER
HSE125 and HSE145 are condensing boilers that do more for less. Among the most versatile heating appliances on the market, they combine domestic hot water and central heating in a single compact unit. HSE is the Heating, Smart, Efficient solution. The HSE uses a unique high efficiency heat exchanger performing at up to 95% AFUE. As an ENERGY STAR® appliance, it is eligible for most government and utility rebates. Reliability, high efficiency, economical design and a 10 year heat exchanger warranty are just a few of the reasons why it is the smart choice for builders and home owners alike.
AVAILABLE SIZES: 125,000 and 145,000 Btu/hr input
FUEL: Natural gas or propane
PERFECT FOR HEATING WITH AN INDIRECT 
TANK OR INSTANTANEOUS DHW
EFFICIENT: 95% AFUE (Annual Fuel Utilization Efficiency)
FLEXIBLE: Two fully modulating models with a smart controller and integrated domestic hot water
LOW PROFILE: Whisper quiet operation in a light, wall-hung design
MADE FOR THE HOME: 1/2″ gas and domestic connections
NRCAN LISTING – NRCAN QUALIFICATION FOR HSE CONDENSING BOILERS
ENERGYGUIDE LABELS – HSE-125, HSE-145, HSE-125-N WATER HEATER, HSE-125-P WATER HEATER
Specifications
| Model | Fuel Type | Input (Btu/hr) | Output (Btu/hr) | Input (kW) | Output (kW) | AFUE (%) |
|---|---|---|---|---|---|---|
| HSE-125-N | Natural Gas | 29,000 to 124,000 | 27,000 to 118,000 | 8.4 to 36.3 | 8.0 to 34.5 | 95 |
| HSE-125-P | Propane | 29,000 to 124,000 | 27,000 to 118,000 | 8.4 to 36.3 | 8.0 to 34.5 | 95 |
| HSE-145-N | Natural Gas | 33,000 to 145,000 | 31,000 to 136,000 | 9.7 to 42.5 | 9.1 to 39.9 | 94 |
| HSE-145-P | Propane | 33,000 to 145,000 | 31,000 to 136,000 | 9.7 to 42.5 | 9.1 to 39.9 | 94 |
Dimensions
Features
The unique high efficiency heat exchanger uses copper waterways in an aluminium block for maximum heat transfer. The sophisticated controller with outdoor air sensor constantly monitors environmental changes and modulates according to heating and domestic water demands. You can take comfort in the warmth and cost savings provided by one of the most advanced heating appliances available.
UNLIMITED APPLICATIONS
Two fully modulating condensing boiler models for residential and light commercial applications: central heating, hot water, or both provided by a low profile, wall-hung boiler.
ENVIRONMENTALLY FRIENDLY
The smart HSE design does more with fewer parts and operates at up to 95% efficiency with near 0 standby losses and a 5:1 turndown ratio. A state-of-the-art production facility reduces overall environmental impact making it the green choice for heating.
DEPENDABLE PERFORMANCE
A proven, double high efficiency heat exchanger has fewer moving parts offering long lasting service. Dual, all-copper waterways protect the heat exchanger from internal corrosion and are glycol compatible.
EASY INSTALLATION
Trouble-free installation with simple piping and DHW kits, integrated hot water, 85ft CPVC, SS, and PP venting options and a user-friendly controller, reduce setup time and costs.
DOUBLE HIGH EFFICIENCY HEAT EXCHANGER
A multi-pass heat exchanger with dual copper waterways allows all heating to be done in a single, compact and cost effective unit. No need for a diverter valve, pump, hot water plate exchanger, or air pressure switch.
REDUCED MAINTENANCE
The design offers convenient access to internal components and involves few moving parts which reduces maintenance costs – the heat exchanger is backed by a 10 year warranty (See warranty documents for details).
Service Bulletins
HSE Venting Options
The HSE High Efficiency Boiler is approved for multiple venting options including Stainless Steel, CPVC, Polypropylene single wall and Concentric.
Concentric options include M&G / Duravent and Centrotherm.
See the latest manual for details or contact our technical support team for assistance.
Warranty Cards
Remember that warranties are only valid if a warranty card is filled out and returned to Allied Technologies by the home owner. Online registration is available at our Product Registration Section of the website.