Modine's HDB series of their popular Hot Dawg® heater features a blower type fan for increased air flow performance over traditional propeller units. The higher CFM ratings of these units make them a perfect solution for warehouses, large garages or workshops where heat needs to be thrown a long distance.
Dimensions, Diagrams, and Specifications (PDF)
HD-HDB-PDP-BDP_Flier (PDF)
Wiring Diagrams (PDF)
| Model | Motor HP | Input BTUH | Output BTUH | Vent Dia. | Air Flow CFM Range | Air Temp Rise Range |
|---|---|---|---|---|---|---|
| HDB60 | 1/4 | 60,000 | 48,000 | 3" or 5" | 635 - 1100 | 40 - 70 |
| HDB75 | 1/3 | 75,000 | 60,000 | 3" or 5" | 795 - 1390 | 40 - 70 |
| HDB100 | 1/2 | 100,000 | 80,000 | 4" or 6" | 1060 - 1850 | 40-70 |
| HDB125 | 1/2 | 125,000 | 100,000 | 4" or 6" | 1240-2050 | 45-75 |
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 can NOT 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
Modine HD-Series vs. Sterling RF-Series
| Specs | 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 |
Residential Owners Manual (PDF)
Modine offers a 10 year limited warranty on the heat exchanger and a 2 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)
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 and Greenhouse Megastore customer service contacted to make arrangements 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.
