Hot Dawg® Separated Combustion Heater
Freight Savings
For large heater orders over $10,000, freight savings are available by contacting our sales team at 1-888-281-9337.
Model HDS Hot Dawg® Separated Heater Combustion Units are a convenient and affordable way to keep your greenhouse plants warm for winter growing. The separated combustion Hot Dawg draws its combustion air from outside to ensure that the unit always has plenty of fresh, clean air to breathe. This fresh-air supply reduces common concerns about dusty, dirty or humid applications. In addition, by drawing the combustion air from the outside, the overall heating efficiency is increased.
Advantages of Hot Dawg Space Heaters
The Hot Dawg® by Modine is designed to generate heat without the expense or hassle of a regular HVAC setup. You don't even need electricity! Here are some of the ways these heaters outperform other units:
- 100% outside air for combustion
- Sealed compartment protects combination gas control
- Ignition control
- Manifold and burner
- Horizontal or vertical concentric venting
- 80% thermal efficiency
- Field convertible to propane
- 100% shutoff with continuous retry
In addition to greenhouses, the Hot Dawg is also an excellent combustion garage heater, It's available as an indoor propane heater, natural gas heater or LP (liquid petroleum) heater with a 10-year warranty.
Install a Modine Hot Dawg separated combustion heater to keep plants, vehicles, equipment and people warm during the winter. Also known as a sealed combustion heater, these units have a design that uses outside air for the combustion process with a secondary exhaust vent. This makes the heater more efficient and prevents damage from indoor air contaminants. It also stops dangerous gas exhaust products from entering the air you and your plants breathe. No electricity is needed, letting you install the heater wherever you have the appropriate venting.
Greenhouse Megastore has a variety of Modine combustion space heater models that burn at 80% efficiency. Maximum hourly output ranges from 24,000 BTUs (single-car garage and small greenhouses) to 100,000 BTUs (any open structure up to 1,200 square feet). You can order a natural gas, liquid petroleum or propane heater that is ultra-quiet. The heat exchanger has a full 10-year warranty, so you can count on its operation for any growing or living space.
Hot Dawg Combustion Space Heater Features:
- Less maintenance in dusty environments.
- Improved efficiency by using outside air for combustion.
- Greater durability in "hostile" environments (environments possessing substances that may deteriorate the performance of the unit).
- External thermostat and gas connections.
- Hush-puppy quiet operation.
- Uses natural, liquid petroleum or propane gas.
- Certified for residential, commercial and industrial use.
- Low-profile design and neutral color to blend in with décor.
- Lightweight - easily installs one inch from the ceiling with only two angle brackets (included).
- Install quickly and easily with field wiring connections and knockouts for quick access to gas and electricity.
- Standard power exhaust simplifies side-wall or roof venting with small-diameter vent piping.
- Versatile design allows for right- or left-hand controls and installation. Gas, electrical and flue connections can be changed from one side to the other by simply flipping the Hot Dawg over.
- Permanently lubricated motor for trouble-free dependability.
- Full 10-year warranty on the heat exchanger (2 years on all other components).
Dimensions and Diagrams
Dimensions, Diagrams and Specifications (PDF)
Modine Greenhouse Heating Solutions (PDF)
Wiring Diagrams (PDF)
Performance Specifications
| Model | Input BTUH | Output BTUH | Vent Size | CFM @ 70°F |
|---|---|---|---|---|
| HD30 | 30,000 | 24,000 | 3" | 505 |
| HD45 | 45,000 | 36,000 | 3" | 720 |
| HD60 | 60,000 | 48,000 | 4" | 990 |
| HD75 | 75,000 | 60,000 | 4" | 1160 |
| HD100 | 100,000 | 80,000 | 4" | 1460 |
| HD125 | 125,000 | 100,000 | 4" | 1850 |
*Do not locate any gas-fired unit in areas with chlorinated, halogenated or acidic vapors in atmosphere.
Installation
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.
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
Manual
Residential Owners Manual (PDF)
Warranty
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. Heaters with obvious damage should be refused and you should contact Greenhouse Megastore customer service to arrange 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.
Original: $1,545.00
-65%$1,545.00
$540.75Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Freight Savings
For large heater orders over $10,000, freight savings are available by contacting our sales team at 1-888-281-9337.
Model HDS Hot Dawg® Separated Heater Combustion Units are a convenient and affordable way to keep your greenhouse plants warm for winter growing. The separated combustion Hot Dawg draws its combustion air from outside to ensure that the unit always has plenty of fresh, clean air to breathe. This fresh-air supply reduces common concerns about dusty, dirty or humid applications. In addition, by drawing the combustion air from the outside, the overall heating efficiency is increased.
Advantages of Hot Dawg Space Heaters
The Hot Dawg® by Modine is designed to generate heat without the expense or hassle of a regular HVAC setup. You don't even need electricity! Here are some of the ways these heaters outperform other units:
- 100% outside air for combustion
- Sealed compartment protects combination gas control
- Ignition control
- Manifold and burner
- Horizontal or vertical concentric venting
- 80% thermal efficiency
- Field convertible to propane
- 100% shutoff with continuous retry
In addition to greenhouses, the Hot Dawg is also an excellent combustion garage heater, It's available as an indoor propane heater, natural gas heater or LP (liquid petroleum) heater with a 10-year warranty.
Install a Modine Hot Dawg separated combustion heater to keep plants, vehicles, equipment and people warm during the winter. Also known as a sealed combustion heater, these units have a design that uses outside air for the combustion process with a secondary exhaust vent. This makes the heater more efficient and prevents damage from indoor air contaminants. It also stops dangerous gas exhaust products from entering the air you and your plants breathe. No electricity is needed, letting you install the heater wherever you have the appropriate venting.
Greenhouse Megastore has a variety of Modine combustion space heater models that burn at 80% efficiency. Maximum hourly output ranges from 24,000 BTUs (single-car garage and small greenhouses) to 100,000 BTUs (any open structure up to 1,200 square feet). You can order a natural gas, liquid petroleum or propane heater that is ultra-quiet. The heat exchanger has a full 10-year warranty, so you can count on its operation for any growing or living space.
Hot Dawg Combustion Space Heater Features:
- Less maintenance in dusty environments.
- Improved efficiency by using outside air for combustion.
- Greater durability in "hostile" environments (environments possessing substances that may deteriorate the performance of the unit).
- External thermostat and gas connections.
- Hush-puppy quiet operation.
- Uses natural, liquid petroleum or propane gas.
- Certified for residential, commercial and industrial use.
- Low-profile design and neutral color to blend in with décor.
- Lightweight - easily installs one inch from the ceiling with only two angle brackets (included).
- Install quickly and easily with field wiring connections and knockouts for quick access to gas and electricity.
- Standard power exhaust simplifies side-wall or roof venting with small-diameter vent piping.
- Versatile design allows for right- or left-hand controls and installation. Gas, electrical and flue connections can be changed from one side to the other by simply flipping the Hot Dawg over.
- Permanently lubricated motor for trouble-free dependability.
- Full 10-year warranty on the heat exchanger (2 years on all other components).
Dimensions and Diagrams
Dimensions, Diagrams and Specifications (PDF)
Modine Greenhouse Heating Solutions (PDF)
Wiring Diagrams (PDF)
Performance Specifications
| Model | Input BTUH | Output BTUH | Vent Size | CFM @ 70°F |
|---|---|---|---|---|
| HD30 | 30,000 | 24,000 | 3" | 505 |
| HD45 | 45,000 | 36,000 | 3" | 720 |
| HD60 | 60,000 | 48,000 | 4" | 990 |
| HD75 | 75,000 | 60,000 | 4" | 1160 |
| HD100 | 100,000 | 80,000 | 4" | 1460 |
| HD125 | 125,000 | 100,000 | 4" | 1850 |
*Do not locate any gas-fired unit in areas with chlorinated, halogenated or acidic vapors in atmosphere.
Installation
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.
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
Manual
Residential Owners Manual (PDF)
Warranty
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. Heaters with obvious damage should be refused and you should contact Greenhouse Megastore customer service to arrange 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.
