LF25Introducing a high-performance horizontal natural gas unit heater/duct furnace, designed for reliable heating in a range of professional environments. This unit offers a heating capacity input ranging from 60,000 to 150,000 BTU/hr, with an impressive 83% steady-state efficiency to ensure consistent and efficient warmth. Built with an aluminized steel heat exchanger for enhanced durability, it delivers 1950 CFM of airflow to quickly and effectively heat large spaces. The unit is housed in a sturdy, painted steel cabinet, with dimensions of 42-1/4″ in length, 36″ in width, and 26-1/2″ in depth, making it suitable for a variety of commercial and industrial applications. It also includes comprehensive documentation, such as installation manuals, parts lists, and product specifications, to support easy setup and reliable operation.
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Product Description
Additional Info
Experience superior heating efficiency with our versatile Radiant Garage Heater, designed for optimal performance in a variety of settings. With a high thermal efficiency of up to 83%, this unit provides a broad heat capacity range from 30,000 to 400,000 Btuh, making it ideal for both compact and standard-sized environments.
Key Features: High Thermal Efficiency: Achieve up to 83% efficiency, ensuring cost-effective heating. Two-Stage Heating: Standard on models from 250,000 to 400,000 BTU/hr, offering improved control over heating levels. Durable Tubular Heat Exchanger: Built for long-lasting performance, maximizing heat output while minimizing wear and tear. Curved Design: Optimizes heat transfer by exposing more surface area to the air stream for enhanced warmth distribution. Reduced Air Resistance: Rounded surfaces reduce metallic stress and promote quieter operation by minimizing air turbulence. Low Maintenance: Features an in-shot burner assembly and a no-maintenance, lubricated blower motor, making upkeep simple and hassle-free. Flexible Venting Options: Suitable for both horizontal and vertical installation, providing versatility to meet various space requirements. Reliable Warranty: Includes a 15-year limited warranty on stainless steel heat exchangers, 10-year warranty on aluminized heat exchangers, and a 1-year warranty on covered components. Perfect for garages and non-confined living spaces, our Radiant Garage Heater delivers reliable, efficient heating backed by rigorous factory testing and comprehensive warranty coverage. Its easy installation, combined with robust construction, ensures long-term performance and comfort.
For more details, explore the product specifications and benefits at Allied Commercial.
Specification
Performance
LF25-30A
LF25-45A
LF25-60A
LF25-75A
LF25-90A
LF25-105A
Heating Capacity Input (Btuh)
30,000
45,000
60,000
75,000
90,000
105,000
Heating Capacity Output (Btuh – Natural)
25,020
37,665
50,220
62,550
75,420
87,675
Steady State Efficiency (Natural)
83.4%
83.7%
83.7%
83.4%
83.8%
83.5%
Temperature Rise (F)
37
52
47
56
43
54
Connection Table
Connections
LF25-30A
LF25-45A
LF25-60A
LF25-75A
LF25-90A
LF25-105A
Flue Size (round)
4
4
4
4
4
4
Gas Piping Size (in.)
1/2
1/2
1/2
1/2
1/2
1/2
Fan Table:
Fan Data
LF25-30A
LF25-45A
LF25-60A
LF25-75A
LF25-90A
LF25-105A
Number of Fans
1
1
1
1
1
1
Fan Diameter (in.)
10
10
14
14
16
16
Number of Blades
4
4
4
4
4
4
Motor Output (hp)
1/25
1/25
1/15
1/15
1/10
1/10
rpm
1550
1550
1075
1075
1075
1075
Air Volume (cfm)
625
665
1000
1050
1600
1500
Air Throw at 8 ft. Mounting Height (ft.)
27
29
34
41
46
43
Weight Data Table:
Weight Data
LF25-30A
LF25-45A
LF25-60A
LF25-75A
LF25-90A
LF25-105A
Net Weight (lbs.)
55
60
85
90
115
120
Shipping Weight (lbs.)
60
65
90
95
120
125
Electrical Data
Electrical Data
LF25-30A
LF25-45A
LF25-60A
LF25-75A
LF25-90A
LF25-105A
Fan Motor Full Load Amps
2.0
2.0
2.0
2.0
3.0
3.0
Maximum Overcurrent Protection (MOCP)
15
15
15
15
15
15
High Altitude Pressure Switch Kits:
High Altitude Pressure Switch Kits
LF25-30A
LF25-45A
LF25-60A
LF25-75A
LF25-90A
LF25-105A
Factory
Factory
Factory
Factory
3000-5000 ft.
Factory
Factory
Factory
22K44
2001-4000 ft.
22K44
5001-6000 ft.
Factory
Factory
22L26
22K44
4001-6000 ft.
22L26
6001-9000 ft.
22L27
22L27
22L26
22L27
6001-7000 ft.
22L27
9001-10,000 ft.
22L27
22L27
22L28
22L27
7001-10,000 ft.
22L27
Optional Accessories
Optional Accessories – Gas Heat
US
Canada
Natural Gas to LPG/Propane Conversion Kits (0 – 5000 ft.)
18L11
18L11
Natural Gas to LPG/Propane Conversion Kits (5001 – 8000 ft.)
19A10
19A12
Natural Gas to LPG/Propane Conversion Kits (8001 – 10,000 ft.)
19A11
High Altitude Conversion Kits
High Altitude Conversion Kits – Natural Gas
US
Canada
5001 – 7000 ft.
19A17
19A17
7001 – 10,000 ft.
19A18
Installation Clearance Table
Installation Clearances
in.
mm
Top
1
25
Side opposite control box/access panel
1
25
Control Box/Access Panel Side
24
610
Back
18
457
Bottom
1
1
Flue
6
152
Maximum Mounting Heights Table
Maximum Mounting Height
ft.
m
LF25-30-45-60-75
10
3
LF25-90-105
12
3.7
Horizontal Venting Length Table
No. of Elbows
Maximum Length (feet) of Straight Vent Pipe
1
25
2
20
3
15
4
10
5
5
Vent Adaptor Kits:
Vent Adaptor Kits (For Retro-Fit Installations)
Unit Heater Description
Catalog No.
LF25-45A Combustion Air Inducer Mounting Plate Kit
Required for 4 inch to 3 inch vent pipe applications
19U97
LF25-30A, LF25-45A Vent Adaptor Kit (Upslope)
4 inch unit flue pipe to 3 inch Category III vent pipe
19V95
LF25-30A, LF25-45A Vent Adaptor Kit (Downslope)
4 inch unit flue pipe to 3 inch Category III vent pipe
19V96
Horizontal Vent Kits and Elbow Table
Required for Residential Horizontal Venting Applications
Installation costs vary by system. Heat pumps range $8,000–$18,000 installed; central air conditioners $4,500–$9,000; ductless mini-splits $3,500–$7,000. Financing from $69/month is available, and Alberta Efficiency + Canada Greener Homes rebates of $1,500–$5,000 may also apply.
Yes. Modern cold-climate heat pumps operate efficiently down to −25°C, covering over 90% of Calgary heating days. They replace your air conditioner too, giving you year-round comfort from one system. Most homeowners see 25–40% lower energy costs versus a gas furnace + separate AC.
Most residential installs are completed in one day. Complex jobs (dual-fuel heat pumps, multi-zone ductless) may take two days. We carry Lennox, Carrier, Daikin, and Bosch — whichever ships fastest for your home.
Canada Greener Homes (up to $5,000) and Alberta Efficiency incentives (up to $1,500) apply to qualifying heat pump and high-efficiency furnace installs. We handle the rebate paperwork as part of your installation.
Yes — financing with no payment for 90 days and no money down is available on approved credit. Monthly payments start from $69 for ductless systems. Call (587) 792-1476 or use the booking wizard above to ask about current offers.