Powerful output
5,600 watts at 240V delivers about 19,100 BTU per hour for greenhouses of about 200 sq ft and up.


The DR-988 is a heavy-duty, fan-forced electric heater for larger greenhouses, garages and workshops. It has a built-in thermostat, so it switches on and off to hold the temperature you set. ("Dr. Infrared" is the brand name. This model heats with a fan-forced heating element.)
It is sturdy and portable, with a carry handle and built-in cord storage. Safety features include finger-proof intake and discharge grills and automatic overheat cut-off.
It is sized for larger greenhouses of about 200 sq ft and up, such as the Riga XL and the Royal Victorian VI46. In very cold climates, a large greenhouse may need a second heater. Call us at 678-408-8222 and we will help you size it.
Installation note: Have a licensed electrician install the 240V, 30-amp circuit and receptacle. Use a GFCI-protected circuit in damp locations like a greenhouse.
Exaco · Accessory
Why customers choose it
5,600 watts at 240V delivers about 19,100 BTU per hour for greenhouses of about 200 sq ft and up.
The built-in thermostat ranges from 37°F to 113°F, with the fan on continuous or auto.
Finger-proof intake and discharge grills and automatic overheat cut-off.
A carry handle and built-in cord storage make it easy to move and store.
The details
| Heat output | 5,600 W at 240V, about 19,100 BTU per hour |
|---|---|
| 208V output | About 4,200 W / 14,300 BTU |
| Circuit | Dedicated 240V, 30-amp (draws about 23.4 amps) |
| Plug | NEMA 6-30P (needs a NEMA 6-30R receptacle) |
| Power cord | 6 ft, heavy duty |
| Thermostat | Built in, 37°F to 113°F |
|---|---|
| Fan | ON (continuous) or AUTO |
| Size | About 12" x 12" x 16" h |
|---|---|
| Clearance | 3 ft from front and top, 5.5 in from sides and back |
| Safety | Overheat protection, finger-proof grills |
| Noise level | About 45 dB |
| Listings | UL and cUL |
| Heating area | Greenhouses of about 200 sq ft and up |
|---|---|
| Good matches | Riga XL, Royal Victorian VI46 |
| Warranty | 1-year limited manufacturer warranty |
|---|
Good to know
Can't find your answer? Our greenhouse specialists are happy to help you choose.
678-408-8222 Email usYes. Shipping is free. Locations with limited access, such as islands, are rare exceptions that may carry an extra fee, and we'll tell you before anything ships.
Yes. If you find the same greenhouse for less from an authorized dealer, call or email us with the offer and we'll review it.
Yes. Mulberry Greenhouses is an authorized retailer, so your greenhouse is covered by the full manufacturer warranty.