Question about Star Enerco Heat HSU45 Garage Heater 45000 BTU

1 Answer

I have a 45,000 btu garage heater made by heat star. some heating contactors say that the heat exchangers are prone to cracks. is this true? i work for the nat gas utility as a service tech, and right now it doesn't produce c/o as tested by our detection equipment. I am concerned because the unit is only 2 years old.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,515 Answers

Hi, all heaters are prone to cracks, but this unit is only 2 years old. You should be able to look at the heat exchanger above the burners and see any cracks or rusted out areas. Take a screw driver and push on it to see how strong the metal is. Normally a unit will develop cracks at about 20 years plus. If your tester is reading no carbon monoxside, you have nothing to worry about. If you are concerned, you can mount you a c/o detector near it for the future, but this is not true about the Heat Star units. Take a strong light and look inside and you can see if it is cracked or swollen, rusted out, or the metal is weak. I don't believe you have anything to worry about!! Please keep me posted on this and don't forget to rate me, I no you will be kind. Keep me informed on what you find if anything. I know you are fine.
A/C, Heating, & Refrigeration Contractor

Posted on Aug 06, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Mr heater 75000 btu thermostate turned up exhaust air turns on and ignitor doesnt ignite and times out

Probably your ignitor is bad...

Here is a tip that will help you try to figure out why your furnace is not working.

Basic Furnace or Heating System Troubleshooting


Feb 23, 2011 | Mr. Heater Natural Gas Garage Heater -...

1 Answer

I have a natural gas heat star garage heater it will stat but it wont light

try jumping out the pressure switch see if it lights , or first unplug heater and replug in might reset or it could need a clean

Dec 11, 2010 | Mr. Heater HeatStar Radiant Tube Heater -...

2 Answers

Mr. Heater Natural Gas Garage Heater - 45,000 BTU. Power 120 volt and 24 volt good. Thermostat calling for heat, but nothing happening??

Check for a fuse either in-line or on the circuit board. There should be 24 volts going to the thermostat. If not, you have either a bad transformer or a bad thermostat wire. Jump out the terminals that the thermostat wires are connected to. This should force the unit to fire. If not, bad circuit board.

Dec 23, 2009 | Mr. Heater Natural Gas Garage Heater -...

1 Answer

Thermostat call for heat but the heater doesn't ignite

what number of flashes does the led light on the circuit board show for an error code?

Nov 25, 2009 | Mr. Heater Natural Gas Garage Heater -...

1 Answer

Is it normal to run a 16" vertical tie in to a horizontal exit

No, Exhaust vents on heaters should always maintain vertical orientation because heat rises and creates a natural drafting drawing the fumes out. You have a monoxide poisoning situation otherwise.

Oct 20, 2009 | Mr. Heater Natural Gas Garage Heater -...

Not finding what you are looking for?
Star Enerco Heat HSU45 Garage Heater 45000 BTU Logo

119 people viewed this question

Ask a Question

Usually answered in minutes!

Top Star Heating & Cooling Experts

Paul Carew

Level 3 Expert

3250 Answers

Dennis Boxerman

Level 3 Expert

1250 Answers

Andrew Taylor
Andrew Taylor

Level 3 Expert

19664 Answers

Are you a Star Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides