Gas furnace

Comfortmaker Gas furnace N80MSL Performance 80 Low NOx Gas Furnace

Schedule Service Check Availability

Comfortmaker Residential HVAC Gas furnace Repair, maintenance, and replacement planning

Technical Specifications

Product Specs

Brand: Comfortmaker
Official model: N80MSL
Official product name: Performance 80 Low NOx Gas Furnace
Product category: gas-furnaces
Series: Value
Efficiency Rating = 80% AFUE
Operation = Single-stage operation
Quiet Operation
To the original owner, when product is used in an owner-occupied residence, a 20-year heat exchanger parts limited warranty upon timely registration of your new equipment. See warranty certificate for details.
Timely registration required for 10-year parts limited warranty. Limited warranty period is 5 years if not registered within 90 days of installation. Jurisdictions where warranty benefits cannot be conditioned on registration will receive the registered limited warranty periods. Please see warranty certificate for further details and restrictions.
Quiet performance
Multi 18-speed blower motor that your dealer can customize for tailored home comfort.
Dual fuel capable with a compatible heat pump and thermostat for energy-saving heating performance
Air purifier and humidifier compatible
Wi-Fi® enabled remote access with the Ion™ Gray Smart Thermostat
10-Year Parts Limited Warranty upon timely registration +
20-Year Heat Exchanger Limited Warranty †
Efficient multi 18-speed ECM blower motor
Induced draft combustion motor
Single-stage gas valve
RPJ ® (Rigid Press Joint) primary heat exchanger
Silicon nitride hot surface igniter
High temperature limit control helps prevent overheating
Sound-reducing features: soft mounted blower and inducer motor
Compatible thermostat: heat/cool
Heating capacity:45,000–155,000 BTUh
Official source: Comfortmaker product page
Model or series: N80MSL Performance 80 Low NOx Gas Furnace
Equipment type: Gas furnace
Product group: Residential HVAC
System role: Forced-air heating appliance for a ducted HVAC system
Application: Residential, light-commercial, or managed-property comfort applications
Compatibility check: Verify fuel type, venting, electrical requirements, capacity, controls, and installation clearances.
Verified source: comfortmaker.com

Useful troubleshooting details

Confirm the furnace or packaged heating model, serial number, gas type, venting or condensate setup, filter size, thermostat, and paired cooling equipment.
Share no-heat, ignition trouble, lockout or error codes, pressure-switch concerns, blower issues, short cycling, venting, condensate, or unusual noise.
For replacement planning, note whether the project is like-for-like replacement, dual-fuel planning, or conversion to a heat pump.

Service planning

How GreenFlow handles N80MSL Performance 80 Low NOx Gas Furnace requests

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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Our Happy Customers

Ray

Just had a service call because my tankless water heater stopped working with E110 code. Andrey located the root cause real quick and fixed the issue within half an hour, also gave reasonable recommendations for further maintenance.

Murali S.

HVAC technician was punctual, followed up well, completed quick repairs, ensured the issue was resolved, and provided helpful recommendations.

Neal V.

In an industry that often fraught with contractors taking advantage of homeowners, Andrey was honest with his assessment and willing to install a product acquired elsewhere (most want that margin themselves), patiently answered my questions (I’m an engineer so like to understand what’s happening), and proactively offered practical...

Dev W.

I had a breakdown of my cooling system and Hanna at Green Flow responded to my request right away. They scheduled me same day. The team at Green Flow was easy to communicate with over phone and text. They kept me updated on delays on arrival of the...

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