Dunkirk Quantum 90-200 Boilers | FurnaceCompare®

Dunkirk Quantum 90-200 Boiler Overview

Part of the Dunkirk Quantum 90 series, the 90-200 has a capacity of 200,000 BTUs per hour. It also has a 90% AFUE rating.

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Consumer Reviews of Dunkirk Quantum 90-200


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #2 of 6 Dunkirk Boiler
  • 12.5% of customers recommended

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Dunkirk Quantum 90-200 Boiler Reviews

Showing 1-5 of 8 reviews


4.0 rating
Somewhat Satisfied

Happy with the products.


Bronx, NY


1.0 rating
Very Unsatisfied

As an hvac Contractor my first responsibility is to my customers. I for a long time sold and endorsed Dunkirk boilers. That has now changed. Acting on numerous complaints about leaking from either a crack in the heat exchanger or from one of the factory installed items in the heat exchanger. Now I have a customer with a q90 that actually caught fire after a leak shorted the transformer. I am now reviewing all sales of the Dunkirk boilers and will take what ever action necessary to ensure my customers get taken care of. I urge anyone with a Dunkirk boiler to have it checked for leaks by your hvac Contractor.


Hornell, New York

"Piece of work q90-150"

1.0 rating
Very Unsatisfied

This unit replaced a Lennox boiler that only lasted 3 years. This one has been a maintenance nightmare. I have replace so many ignition starters that my HVAC company keeps them in stock just for me. Now the broiler has cracked after only 8 years. Lennox/Dunkirk are giving us the run around on honoring the warranty. Avoid at all costs!

Anne Simms


"Defective Boiler"

1.0 rating
Very Unsatisfied

Addario's Plumbing charged us $7600 for installing a Dunkirk Q90-200 Hi-efficiency gas boiler in Dec/05. It took them 3 weeks to make it work. Five months later the boiler broke down, water burst out from the boiler unit. No heat for ~a week until the boiler was replaced. Within 6 months the system malfunctioned again, and we paid $605. 9 months later, another ~$600. Since then, we paid at least $1000 or more each year to fix the system without heat on and off. Now, the boiler cracked and leaked water. We will have to find a boiler and replace it, need to find another company. Bad product, irresponsible labor and parts, stay away from them.


Boston, MA


2.0 rating
Somewhat Unsatisfied

Originally installed Lennox Complete Heat unit. Had control board issues then failed after 3 years. Replaced with another but had to pay over $800 shipping and labor for warranty? Replacement. It failed 3 years later. Lennox discontinued so replaced with Dunkirk Quantum 090-150. I again paid parts and labor. Heat exchanger cracked and flooded basement 5 years later. Replaced and again I paid parts and Labor. Now 2 years later the control board failed and it will cost me $632 for the part and extra for labor. If this were a car they would cover labor and I would have the Lemon Law to use.


Saratoga Springs, NY

DUNKIRK Quantum 90-200 Model Numbers

The Quantum 90-200 is available in different models which vary in efficiency and capacity.

Model Number AFUE BTUs per Hour
Q90-125 89.6 125000
Q90-150 89.6 150000
Q90-175 89.6 175000
Q90-200 89.6 200000

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