Modine Hot Dawg® HD60 Unit Heater

Modine Hot Dawg® HD60 Unit Heater


$1,305.90 Regular price
  • In stock - departs in 2-3 business days

The Hot Dawg® HD60 Modine Heater offers powerful performance to keep midsize spaces nice and toasty year-round. With a maximum output of 49,200 BTUs per hour, this Hot Dawg is an ideal three-car garage heater size, and it can also heat greenhouses, workshops, patios and other spaces up to 550 square feet. It operates at 82% efficiency to help you save money on utility costs.

Modine Hot Dawg heaters are available for propane or natural gas - just select the appropriate model above. The neutral paint scheme and quiet operation keep your Modine HD60 out of the spotlight. Angle brackets are included for ceiling installation, and you can also mount it on a sidewall or just leave it on the ground. Note a three-inch vent pipe is required.

Greenhouse Megastore has a Low Price Guarantee and free shipping so you can heat garages and greenhouses without torching your wallet. Every Hot Dawg heater is made in the U.S. and has a 10-year heat exchanger warranty.

Modine HD60 Hot Dawg Heater Features:

  • Made in the U.S.
  • Certified for residential, agricultural and industrial use.
  • Quiet operation.
  • An attractive low-profile design and neutral paint scheme assure that Hot Dawg will blend inconspicuously into any garage décor.
  • Durable polyester-powder paint maintains life-long good looks.
  • Standard power exhaust simplifies side-wall or roof venting with a small-diameter vent pipe.
  • Versatile design allows for right- or left-hand piping and installation. Gas, electrical and flue connections can be changed from one side to the other by simply flipping the Hot Dawg over.
  • Lightweight and easily installs from the ceiling with only two angle brackets (included)
  • Installs quickly and easily with field wiring connections and knockouts for quick access to gas and electricity
  • Designed for natural or propane gas.
  • Sealed, permanently lubricated motor for trouble-free dependability.
  • Full 10-year warranty on heat exchanger - two-year warranty on all other parts.
  • Note: 24,000 through 75,0000 (HD25A-HD75A) BTUH heaters will include ceiling mounting brackets. Ceiling mounting brackets for the 100,000 and 125,000 (HD100A and HD125A) BTUH heaters must be purchased separately.

Dimensions and Diagrams

Dimensions, Diagrams and Specifications (PDF)

Modine Greenhouse Heating Solutions (PDF)

Wiring Diagrams (PDF)

Performance Specifications

Model Application Input BTUH Output BTUH Vent Size Weight (lb.)
HD30 1 to 1.52 Car Garage
or up to 250 SF Greenhouse.
30,000 24,600 Requires 3" Vent Pipe 55
HD45 2 to 2.5 Car Garage
or up to 350 SF Greenhouse.
45,000 36,900 Requires 3" Vent Pipe 60
HD60 3 to 3.5 Car Garage
or up to 550 SF Greenhouse.
60,000 49,200 Requires 3" Vent Pipe 80
HD75 Large Garage
or up to 650 SF Greenhouse.
75,000 61,500 Requires 3" Vent Pipe 85
HD100 Up to 1000 SF. 100,000 82,000 Requires 4" Vent Pipe 125
HD125 Up to 1200 SF. 125,000 102,500 Requires 4" Vent Pipe 125


Many of our customers happily report that purchasing a Hot Dawg heater from the Greenhouse Megastore helped them save 50% or more off the unit price received from a local HVAC installer. However, for safety reasons and to minimize installation problems, Modine strongly recommends having a licensed HVAC technician install your Hot Dawg heater. Although we are happy to offer limited technical support for your Hot Dawg purchase, we cannot install the heater for you over the phone nor are we able to troubleshoot problems you may experience if you choose to install the heater yourself. By purchasing this heater from us, you accept sole responsibility for installation and agree to abide by Modine's limited warranty.


Based on our experience in selling Modine Hot Dawg Heaters, we have written up a troubleshooting guide that deals with the issues we most commonly hear from customers. - Troubleshoot a Modine Hot Dawg

If you still need help, check out Modine's own troubleshooting guide.

Comparison Chart

Modine HD-Series vs. Sterling RF-Series

Specification Modine HD-Series Sterling RF-Series Comments
BTU Range 30 - 125 MBH 30 - 90 MBH Modine covers more applications
Minimum Efficiency 80% 80% Same non-condensing high efficiency
Blower Fan Units
(HDB model only)
60 - 125 MBH Not Available Modine covers more applications
Casing Paint Polyester Powder Wet Enamel Modine units will look better longer
Quiet Swept Wing Fans 100 and 125 MBH Not Available Larger Modine units are quieter
Heat Exchanger Gauge 18 Gauge 20 Gauge Modine heat exchangers are heavier gauge
Optional Stainless Steel Yes Not Available Modine covers more applications for corrosive environments
T.E. Fan Motor Standard Yes No Modine motors are protected for longer life
Power Vented X-Changer Warranty
(HDS and HDC models only)
10 Years 10 Years Same 10 year heat exchanger warranty
Sep. Comb. X Changer Warranty
(HDS & HDC models only
10 Years 5 Years Modine separated combustion units warrantied longer
Component Warranty 2 Years 1 Year Modine parts warrantied longer

Additional Information


Residential Owners Manual (PDF)


Modine offers a 10-year limited warranty on the heat exchanger and a two-year limited warranty on all other components. Please note this warranty covers parts only and does not cover any labor costs associated with repairing the heater. View Warranty (PDF)

Product Video

Heater Warranty and Return Policy

It is the customer's responsibility to carefully inspect heaters for damage before accepting delivery since heaters are usually not returnable once delivery is accepted. Obviously damaged heaters should be refused - contact Greenhouse Megastore customer service to arrange for a replacement unit. Once delivery is accepted, Greenhouse Megastore will gladly provide replacement parts under the manufacturer's warranty to repair damaged or defective heaters. However, this warranty does not include any labor costs associated with installing these parts. Warranty issues should be diagnosed by a certified HVAC technician since parts deemed not to be defective by the manufacturer are not available for credit back to the customer. Specific warranty policies vary by manufacturer but typically cover replacement parts as indicated above up to one year after purchase. Please contact Greenhouse Megastore customer service if you have any questions about the warranty for your specific heater.


This item ships via Motor Freight Carrier - almost anywhere in the Contiguous United States

Motor Freight Requirements

  • The shipment must be delivered to a business or residence (a PO Box is invalid)
  • The delivery address must be able to accommodate a tractor/trailer as much as 70' in length
  • Someone must be present to receive and unload the shipment from the truck
  • Shipments and/or locations requiring a lift gate, inside delivery, and/or with limited access may incur additional charges by the carrier

Please contact Greenhouse Megastore Customer Service at 1-888-281-9337 if you have any questions about delivery to your specific address so we can ensure the smoothest delivery possible!

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Customer Reviews

Based on 8 reviews
Legacy Review
Good Heater

I bought this for an oversize 3 car garage (36x26) that is insulated, but not highly. On fairly cold days (around 10) it will bring the temp up to 60 in about an hour. Noticeably warmer in 10 minutes or so. I have it in a corner, pointing to the opposite corner and it heats the entire area well. Be sure to read the instructions carefully for vent sizing. The attachment on the back is 3", so you may need to adapt up to 4" on many installations.
Installation tip: I purchased some eye bolts, hooks and nylon rope. Since I mounted it angled in the building, I installed 2x4's flat on the ceiling for mounting. I put the bolts with washers through the outside slots in the hanger rails and screwed the screw eyes in the side of the 2x4 at the mounting location. I tied the rope on an eye bolt and threaded it through the other eyes up and down. This left me with a single pull point to lift the unit close to position and tie it off. I could then get the permanent bolts started without having to hold the unit up at the same time.

Legacy Review
Love my Hot Dawg

Love this heater. I have a 3 car garage and it heats it real well. Solid construction and well built. Was shipped without a scratch and well packaged.

Legacy Review
hot dawg heater package is a great value

The heater with package is installed in the basement of the new addition. The addition has a garage door. The heater is quickly able to heat the basement after the garage door has been opened (temperature today is about 10 degrees F).

Legacy Review
seems more powerful

Compact, quiet and powerful, strong fan, looks like its finish will hold up better to greenhouse conditions than another (top rated) brand I replaced. ---G.H. Megastore charged Calif. sales tax but not shipping to home, so their's was the best deal --- did not deliver thermostat as promised with the original order, but did follow up when I called in.

Legacy Review
very good purchase

heater is very smooth and runs quiet,has no problem heating my triple garage, it also looks very nice. If I have the opportunity I will recommend this heater to someone else. I had this heater recommended to me and am not disappointed.

Legacy Review
great prices

the product is a proven commodity and the price and shipping were excellent. everything went as promised.

Legacy Review
Excellent Product

The Hot Dawg was easy to install and hook up. It worked great the first time it was turned on and every time since. I highly recommend this product to anyone looking for a great workshop heater.

Legacy Review