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LOVE this suana. Maya and Norse Steam Team were amazing to work with!
Built to Order: 8–16 Business Days
Shipping Time: 2–7 Business Days
Free Shipping within the Continental United States
- Description
- Additional information
- Features
- Applications
- Which Heater Do I Need?
- Specifications
- Manuals / Catalogs
- FAQ
Detroit Radiant DSRF-35 Vented Tube Heater: even patio heat with exhaust routed through a vent
The Detroit Radiant DSRF-35 Vented Tube Heater is a gas heater for covered patios, never indoor rooms at home. Its steel tube has aluminum and black coatings. It is 21 feet 10 inches long, weighs 200 pounds and hangs from a ceiling or canopy 9 to 16 feet high. It warms about 26 by 12 feet. Radiant heat warms people and surfaces directly, like sunshine, instead of warming the air, so it works outdoors. It runs on a piped gas line, natural gas or propane, so there is no tank to refill. Detroit Radiant Products is a family owned company founded in 1955 that builds its heaters in Warren, Michigan.
Pick 65,000, 80,000 or 100,000 BTUs and your gas type on this page. Each drops to a lower setting once the patio is warm, so it cycles less. A vent pipe can carry exhaust outside instead of leaving it under the canopy. Three point hanging brackets are optional. The warranty covers components for three years, tubes for five and the burner for ten. Need a shorter heater? See the Detroit Radiant DSRF-30 Vented Tube Heater. The Detroit Radiant DSRF-35 Vented Tube Heater ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
| Weight | 90.7 kg |
|---|---|
| Dimensions | 243.8 × 55.9 × 86.4 cm |
Features
- Dual certified to ANSI Z83.20 and ANSI Z83.26
- Pre- and post-purge controls
- Self-diagnostic LED, microprocessor based circuitry
Applications
Application by Industry
Use radiant heat in a variety of hard to heat applications. Infrared heats people, floors, walls and other surfaces directly without heating the air first, which is why it works where forced air fails. Tap an industry to see how Detroit Radiant heaters are used there.
Agriculture
Low intensity radiant tube brooders and high intensity brooders.
Infrared heaters are widely used in swine, poultry, brooder and dairy barns because they have a long record of proven results. Two stage heaters add efficiency and several benefits: lower running costs, less on and off cycling, more fuel saved, the ability to change the heat output, and better animal comfort. The result is better animal performance, less fuel burned and a longer heater life.
- Save 20 to 50 percent on the fuel bill with radiant tube heat compared with other heating appliances
- Cut annual maintenance by up to 90 percent
- Optional two stage operation for better comfort
- Quiet, clean operation
Aircraft Hangars
Heat large, hard to heat areas.
Gas fired infrared heaters heat efficiently because they warm exactly what needs to be warm: people, floors, walls and other surfaces, instead of the air. That suits hangars with huge air volumes or lots of air movement, where warm air heating is wasted because it must first heat all the air, which rises before anything else does.
Equipment selection: high BTU tube heaters or high intensity models are made for high mounting spots like hangars. Two stage heaters recover the heat lost through the big doors, then cycle less during normal operation. Most of the heat should be concentrated near the main door with burner boxes or extra heaters. ANSI/NFPA 409 calls for the heater to sit at least 10 feet above the highest wing surface of any aircraft stored inside.
Commonly used products
- HLV Series engineered vacuum systems
- REV Series two stage low intensity
- HL3 Series two stage low intensity
- DX3L Series single stage low intensity
- DR Series high intensity
Automotive
Efficiently heat open door service areas.
Most service garages and vehicle maintenance shops have a lot of open door area for their size, and cold vehicles keep rolling in. That makes infrared the economical way to heat the space. When placing heaters, keep them away from overhead doors and vehicle lifts, keep the published clearances from hose reels and exhaust collection systems, and never put a heater inside a paint booth. In smaller areas where tube heaters are not practical, a forced air unit heater can fill in.
Detroit Radiant recommends low intensity tube heaters with outside air supplied to each heater where degreasers, parts washers or rust proofing are used, plus mechanical ventilation at floor level, since most chemical fumes are heavier than air. Most centers use 75,000 to 150,000 BTU tube heaters in a perimeter layout, with extra units or burner boxes stacked at the door areas.
Commonly used products
- REV Series two stage low intensity
- HL3 Series two stage low intensity
- DX3L Series single stage low intensity
- MP3 Series modulating low intensity
- DR Series high intensity
- FA and UH Series separated combustion unit heaters
Car Washes
Save energy while heating harsh environments.
Short tube heaters with high BTU ratings, or small to mid size high intensity heaters, are the efficient choices for a car wash. Most car wash heating systems are designed to protect against freezing and to spot heat employees, so the heaters are best placed at the ends of the tunnel. Millivolt controls are the usual pick for equipment rooms, if shielded from the wind, so freeze protection keeps working during a power outage.
Stainless steel, silicone sealant, waterproof controls and electrical attachments are recommended, and two stage operation adds further energy savings.
Commonly used products
- Stainless steel low intensity tube heaters
- DR Series high intensity
CNG Facilities
Heating vehicle maintenance facilities.
Natural gas is an affordable, abundant fuel for fleets, and Detroit Radiant has the experience to heat compressed natural gas (CNG) vehicle maintenance facilities. The company offers a range of options and can usually turn around concept drawings within a few days.
CNG shops must comply with special requirements such as NFPA 30A, which says the heater surface temperature must not exceed 750 degrees F. Detroit Radiant's CSA design certified heaters meet the construction criteria the code requires. When the space needs more burners than will fit, the engineered HLV vacuum system can be used in the design.
Commonly used products
- CL3 Series two stage low intensity
- CX3 Series single stage low intensity
- HLV Series engineered vacuum systems
Military
Products and expertise for the Navy, Air Force, Army, Marines and Coast Guard.
Detroit Radiant's product range and military experience have been used in a wide variety of military applications, including projects for the United States Navy, Air Force, Army, Marines and Coast Guard.
Commonly used products
- HLV Series engineered vacuum systems
- MP3 Series modulating low intensity
- REV Series two stage low intensity
- HL3 Series two stage low intensity
- DX3L Series single stage low intensity
Municipal
Fleet heating for fleet, transit and police facilities.
Detroit Radiant offers a wide selection of infrared heating products for municipal fleet facilities: fleet maintenance garages, transit facilities and garages, police stations and more.
Commonly used products
- CL3 Series two stage low intensity
- CX3 Series single stage low intensity
- HLV Series engineered vacuum systems
- REV Series two stage low intensity
- HL3 Series two stage low intensity
- DX3L Series single stage low intensity
- DR Series high intensity
Outdoor
Gently warm people and furnishings, not the air.
Whether you want to extend the outdoor season, heat a designated smoking area or add room for peak crowds, Detroit Radiant's range has an outdoor heater to fit.
- Air movement: wind, even a light breeze, is the biggest variable in outdoor comfort. Barriers such as wind curtains are highly recommended wherever possible, but always keep the clearances to combustibles.
- Mounting heights: outdoor and spot heating usually means mounting the heater lower, closer to the people. A lower mount covers less area but gives a more focused heat pattern, so the final height may need adjusting to get the result you want.
- Your expectations: there is rarely a one size fits all answer. Maximum comfort in extreme conditions takes more heaters; taking the chill off a smoking area for a few minutes takes fewer.
Commonly used products
- DSC Series single or two stage high intensity
- DST Designer Series low intensity
- DSR Designer Series low intensity tube heaters
- DSRF Designer Series vented tube heaters
- HL3 Series two stage low intensity
- DX3L Series single stage low intensity
- DGS Series electric
- DSS Series electric
- ELX Series electric
- ELD Series electric
- DR Series high intensity
Spot Heating
Heating only a portion of a building? Detroit Radiant offers great options.
When only part of a building needs heat, consider spot heating. Both high intensity infrared heaters and low intensity tube heaters suit it. Tube heaters are usually placed in a U shape for spot heating: the U puts the hottest tube next to the coolest tube for even comfort and gives the most flexibility in placement.
High intensity heaters are usually easier to install and cheaper for spot heating. They are especially suited to buildings that are poorly insulated, loosely built, have high ceilings or lose a lot of heat per square foot.
Commonly used products
- DR Series high intensity
- REV Series two stage low intensity
- HL3 Series two stage low intensity
- DX3L Series single stage low intensity
- ELX Series electric
- BAH Series electric space heaters
Warehouses
Strategically placed for the best coverage of the space.
Detroit Radiant offers many cost effective options for heating a warehouse. When choosing equipment, consider the warehouse type, its size, the mounting heights, the level of insulation and any other design features that affect the heater choice. Tube heaters give plenty of placement options with regard to clearances and are usually thermostat controlled.
Place warehouse heaters for the best coverage: a perimeter layout, or a series of heaters between rows of storage racks. Whatever the layout, mind the clearances to combustibles, especially above and below the heater where stacked goods are a concern. Detroit Radiant recommends warning plaques (part PLQ) to advise users of the clearances and stacking limits.
Commonly used products
- HLV Series engineered vacuum systems
- REV Series two stage low intensity
- HL3 Series two stage low intensity
- DX3L Series single stage low intensity
- DR Series high intensity
- ELD Series electric
- ELX Series electric
The heaters we carry from Detroit Radiant are the outdoor and electric lines: the DSC, DSR and DSRF gas patio heaters and the ELD, ELX, DSS and BAH electric heaters. The commercial tube and high intensity lines named above are built by the same company for the other industries.
Which Heater Do I Need?
Patio Heater Finder
Tell us about your outdoor space and we’ll match the right heater, and tell you how many you need.
Where will the heater go?
How do you want to mount it?
Electric or gas?
How big is the area you want to keep warm?
Just the seating area, not the whole yard. Heaters warm people and furniture below them, not the air.
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Specifications
SKU: DSRF-35-65, DSRF-35-80, DSRF-35-100
| Specification | Value |
|---|---|
| Model | DSRF-35-65 / -80 / -100 — per selected Heat Output |
| BTU/h (High / Low) | 65,000 / 50,000 · 80,000 / 52,000 · 100,000 / 65,000 (per Heat Output) |
| Length | 21′-10″ |
| Weight | 200 lbs. |
| Mounting Height | 9′ to 16′ (factory guideline), level or up to 30° |
| Clearances to Combustibles (0°) | 25” side, 6” top, 60” below (77” below for DSRF-35-100); see the manual for 30° mounting |
| Gas Type | Natural Gas (3.5” W.C.) or Propane (10.0” W.C.) – specify at order |
| Shipping | Truckline only; ships on a skid |
| Combustion Chamber | 4” Aluminized Steel |
| Radiant Tubes | .95 Emissive Black-Coated Aluminized Steel |
| Electrical | 120 V, 60 Hz with power cord; 24 V controls; 4.8 A starting / 1.1 A running; hot surface ignition |
| Included | Hanging kit and stainless steel flexible gas connector |
| Certification | CSA certified for commercial/industrial indoor and outdoor use and residential outdoor use only (ANSI Z83.20 vented / Z83.26 unvented) |
| Warranty | 3-5-10 (Components/Tubes/Burner) |
| Dimensions | 261.75″ L x 18.25″ W x 11.75″ H (21 ft 10 in) |
| Radiant Tube | 35 linear ft of 4″ tube |
| Shipping Weight | 200 lbs boxed; Truckline only; skid adds 90 lb; 4 DSRF-35 per skid |
| Shipping Boxes | Burner box (1): 38 L x 24 W x 10 H in; Housing box (1): 96 L x 22 W x 34 H in; Egg crate box (2): 50 L x 16 W x 4 H in |
| Approximate Area Heated | 26 ft x 12 ft |
| Clearances to Combustibles (30°) | 65,000 and 80,000 BTU/h: 36″ front, 10″ behind, 12″ ends, 9″ top, 47″ below · 100,000 BTU/h: 45″ front, 10″ behind, 12″ ends, 9″ top, 64″ below; between 0° and 30° use the larger figure |
| Hanging Points | 3 (use the 3-point bracket kits) |
Manuals / Catalogs
Catalogs, Brochures & Data Sheets
DSRF Series Full Submittal Package
Gas-Fired Patio Heater Design Guide
Manuals
DSRF Series Installation, Operation, Parts, & Maintenance Manual
FAQ
How is the 35 different from the 30?
Length and output. This unit runs 21 feet 10 inches with 35 linear feet of tube, weighs about 200 pounds and adds a 100,000 BTU option to the 65,000 and 80,000 outputs on the Heat Output selector. Because of its length, the Accessories selector offers 3-point hanging bracket kits made for the DSRF-35 alongside the 2-point kits.
What clearances change at 100,000 BTU?
The brochure keeps 25 inches to the sides and 6 above for every output, but the clearance below rises from 60 inches to 77 inches for the 100,000 BTU model at 0 degrees. Mounting heights stay 9 to 16 feet. Tilted installations up to 30 degrees use the separate clearance table in the manual.
Is it vented?
Yes, this is the vented DSRF series, CSA certified for commercial indoor and outdoor use and residential outdoor only, so its combustion products can be ducted away following the manual linked under Manuals. The Accessories selector carries a 4 inch intake extension plus an exhaust kit that converts the heater to unvented operation where a vent run is not required. The always-unvented equivalent is the DSRL.
What fuel and pressure?
Natural gas at 3.5 inches water column or propane at 10 inches, specified at order on the Fuel Type selector. Low fire is 50,000 BTU for the 65,000 unit, 52,000 for the 80,000 and 65,000 for the 100,000, giving the two-stage control room to hold temperature. A stainless flexible gas connector comes in the box.
What power and ignition?
Plug-in 120 volt, 60 Hz with a standard power cord, 24 volt controls, 4.8 amps starting and 1.1 running. Hot surface ignition with pre- and post-purge and a self-diagnostic LED on the microprocessor board. See more infrared patio heaters if you need a plug-in unit at a smaller scale.
How does it ship and what warranty applies?
Truckline only, on a skid, per the Specifications tab, with free shipping in the continental United States. The warranty is 3 years on components, 5 on tubes and 10 on the burner. The 4 inch aluminized combustion chamber and .95 emissive tubes are the same construction as the shorter DSRF-30.
Customer Reviews
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What Our Customers Say
D
A sauna turns your garden into a spa oasis. We debated it for a while, but after renovating our house, we pulled the trigger and bought a sauna from Norse Steam and Maya. She was always super responsive and helpful throughout the process. Don't kid yourself, getting a really nice sauna is not that easy. Sizing and heating need to be figured out, as does the building, but we have always had a helpful partner on our side. She never upsold us on anything we didn't need, and we got some nice freebies when the sauna was delivered. And now we can really enjoy every moment in our garden.
KF
I'm really happy with my sauna purchase. Maya gave above and beyond excellent customer service. She wasn't pushy and gave impressive followup after the delivery to make sure everything was just right.
DE
I enjoy my FD2 Sauna with Red Light, Infrared and radiant heat. Use it 5x a week and my post workout soreness is minimal and sleep great. Maya at Norse Steam was excellent to work with.
B
We purchased the 3-person sauna for our outdoor garden. We chose the cube sauna for the aesthetic and could not be happier.
I assembled by myself except for the 2 large panels (requires a few people). Instructions were good - took me two partial Saturdays to complete and a few hours to unpack and organize in advance of assembly. Had my elec. add a NEMA enclosure on the back for the controller and power for lights and a 2nd panel for the wireless control.
Customer service was excellent
MP
Awesome Sauna and Awesome Company and Experience purchasing it from Maya!
After much research I chose the Finnmark FD-2 and it has met and exceeded all my expectations! Easy to assemble and it functions great - just as advertised. I highly recommend it for home use!
EA
Recently purchased the Finnmark one person after much research. Extremely happy with it and the ordering process. Maya was very responsive and helpful during the process and keeping us updated while we waited for shipment. There were several places I could have ordered this, but i chose Norse Steam based on the communication and customer service which was fantastic. The shipment was also excellent. The setup was pretty seamless for two people - but the best part is the sauna experience 10/10
G
Maya is amazing - super helpful and responsive. Looked at many stores, these guys have the best prices and service. Highly recommend
GR
Norse Steam, and specifically Maya, were extremely helpful as I was making the decision for our Sauna. I was able to get all of the necessary details to make a decision as construction was happening in my backyard to make space for it.
We absolutely love the CL7G. It is extremely comfortable for 6 people (can fit more less comfortably). The Thermory Spruce and Aspen in the interior smells great. The lighting is lovely. We paired the CL7G with the Harvia Spirit 10.5kw.
RS
Had great experience shopping at Norse Steam for the new heater. They had very good deal, with rocks. Customer service was good, and responded very fast with my questions. Received the heater, and it looks good, and the quality seem to be great. Will install soon, and am very excited to start experiencing sauna the way it ment to be
O
positive purchase experience - Harvia Legend 150 SL woodstove
thanks Norse Steam for flawless transaction - I got instant replies on my questions, received competitive price on the wood stove and got it delivered within two weeks!
Can highly recommend Norse Steam for others.
JR
Smoking Hot Tub!
I got the Norse Steam SaunaLife wood-fired hot tub, the S4N model, and its been seriously great. It heats up quicker than I expected, usually around an hour and a half, and once its hot, it stays that way for a good long while. The wood-fired system is simple to use, and honestly kind of fun.
The tub itself feels solid and well put together. The thermo-spruce exterior looks beautiful in person, and the fiberglass interior is smooth, deep, and easy to clean. Its the kind of setup that just works without a bunch of fuss, which I really appreciate.
Also, the team at Norse Steam was genuinely great to work with. Super helpful, quick to respond, and made the process really easy from start to finish. It felt like they actually cared that I was happy with it. The tub has totally become a go-to way to unwind, and I wouldnt change a thing.
S
Maya was so knowledgeable and responsive
Maya was so knowledgeable and responsive. She helped me understand the product options and found a fantastic solution that fit our needs. Her follow through was very helpful and made us comfortable with our decision. We are extremely happy with the end result!
W
Great service
I recently purchased the Harvia Club sauna equipment, and I am thoroughly impressed with both the product and the customer service experience. The heaters robust performance and durable stainless steel construction make it ideal for larger sauna spaces, providing consistent heat and a relaxing environment. Its compatibility with advanced controls ensures a personalized sauna experience every time.
The customer service team was exceptional, prompt, knowledgeable, and helpful throughout the purchase process. They ensured smooth delivery and provided clear guidance on installation and operation. Overall, I highly recommend Harvia Club for anyone seeking premium-quality sauna equipment backed by excellent support!
BT
Great Sauna & Purchase Experience
Great experience purchasing Finnmark FD-2 from Norse Steam. Good communication and easy to assemble. Temperature increases quickly (30 minutes or less to 140) and maintains well. So far this has been a great purchase.
M
Great sauna and great customer service
We purchased the Finnmark SD-1 sauna. Maya was extremely helpful with the purchase. We had an issue with the sauna not reaching the maximum temperature, and Maya connected us with the appropriate technician that explained how to correct the issue. The sauna now heats to the maximum temperature (170 degrees) in less than an hour, and it is a great unit. We are very happy with it, and we would definitely purchase from NorseSteam if we needed any other items.
JK
Sauna Review
I recently purchased a sauna from Norse Steam, and I couldn't be more impressed with the entire experience. From start to finish, their customer service was exceptional, and Maya deserves special recognition for her outstanding support!
Maya was incredibly knowledgeable and patient, answering all my questions about the sauna features, installation process, and maintenance. She went above and beyond to ensure I selected the perfect model for my home. Even after the purchase, Maya followed up to make sure everything was running smoothly and that I was satisfied with my sauna.
The sauna itself is top-notch beautifully designed, durable, and easy to use. It's clear that Norse Steam takes pride in the quality of their products and their commitment to customer satisfaction.
If you're considering a sauna, I wholeheartedly recommend Norse Steam. With their excellent customer service and high-quality products, you're in great hands. Thank you, Maya, and the entire Norse Steam team for a fantastic experience!
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