Greenhouse Unit Heaters Redefined
The revolutionary tubular heat exchanger inside the Lennox LF-24 series of greenhouse heaters ensures you years of performance and high efficiency. Combustion is precise because of special "in-shot" burners and fan assisted exhaust. Equipped with a TrueLeaf Combustion Air Separator, it's bullet-proof.
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Low Mass Greenhouse Boilers

Models and Specifications

TrueLeaf's full line of boiler products fits the needs of all growers. Here’s a description of the entire family.

Mod Con Double-Stack Boilers
From the manufacturer of the Munchkin boilers comes the ModCon commercial-sized stainless steel condensing boilers. Discover the many features and benefits of these jumbo sized Munchkins.

Find out more!
TrueLeaf Technologies for complete greenhouse heating systems, boilers, finned pipe heating systems, warm floor heating systems, hydronic unit heaters, unit heaters, heat exchangers, finned heaters, finned pipe heating, biotherm, microclimate, benchwarmer, roll-n-grow, megatube, hdx tubing, greenpex.
Munchkin
Up to 99.8% efficiency. Microprocessor controlled, fully modulating air and gas feed means peak efficiency is maintained at all times.
This translates into the lowest possible operating cost and a rapid return on investment. Industrial grade greenhouse condensing boiler with up to 99.8% efficiency— stainless steel construction with innovative “Radial Pulse” combustion. Full modulation which is microprocessor controlled through Riello brand “gun” type burner.
TrueLeaf Technologies for complete greenhouse heating systems, boilers, finned pipe heating systems, warm floor heating systems, hydronic unit heaters, unit heaters, heat exchangers, finned heaters, finned pipe heating, biotherm, microclimate, benchwarmer, roll-n-grow, megatube, hdx tubing, greenpex.
Gasmaster
Up to 99.8% efficiency. Microprocessor controlled, fully modulating air and gas feed means peak efficiency is maintained at all times.
This translates into the lowest possible operating cost and a rapid return on investment.


TrueTherm Series
The original copper fin boiler, built for over 50 years. These boilers are reliable stalwarts that run and run and run. Reasonable efficiency and low mass provide a great heat source for greenhouse heating applications in areas without NOx emission regulations.

A. 42,000 to 180,000 BTUH input

Indoor only fully packaged with draft hood and factory-mounted pump
1- or 2-stage
B. 136,000 BTUH input

Indoor or outdoor
2-stage
C. 181,000 to 399,000 BTUH input

Indoor or outdoor
2-stage; low NOx models available
D. 514,000 to 825,000 BTUH input

Indoor or outdoor
4-stage
E. 926,000 to 1,753,000 BTUH input

Outdoor only
4-stage
F. 962,000 to 1,826,000 BTUH input

Indoor only
4-stage
G. 2,100,000 to 4,000,000 BTUH input

Indoor only
4-stage


TrueDelta Series

The TrueDelta design incorporates fan-assisted combustion, providing 84% efficiency, and low NOx emissions which meet all U.S. air quality regulations. The product line offers greater installation and venting flexibility, making it an ideal solution in greenhouse heat situations where atmospherically-vented products are not suitable.

Capacities are available from 120,000 to 2,340,000 BTUH in single-unit configurations, and up to 4,680,000 BTUH in stacked configurations. Two to eight firing stages ensure that the heating load can be precisely tracked thereby providing optimum temperature control and maximum operating efficiency for a non-condensing boiler.

Products are certified for both indoor and outdoor installation, offering maximum installation flexibility.

A. 120,000 to 320,000 BTUH input

2-stage
B. 300,000 to 900,000 BTUH input
2- or 3-stage

C. 990,000 to 2,340,000 BTUH input
3- or 4-stage
Stacked units
D. 600,000 to 1,800,000 BTUH combined input
4- or 6-stage

E. 1,980,000 to 4,680,000 BTUH combined input
6- or 8-stage


TrueDelta with CHX

This system combines the proven reliability of the TrueDelta boiler with a condensing heat exchanger (CHX), providing ultra high efficiency (98% per ANSI Z21.13 at full fire). This unique system is ideally suited for greenhouse heating applications where managing energy costs is critical for success. In addition, the TrueDelta with CHX has ultra low stack temperature that may be suitable for greenhouse CO2 supply systems.

A. 400,000 to 900,000 BTUH input
2- or 3-stage

B. 990,000 to 1,999,000 BTUH input
3- or 4-stage


Y-200 Electronic Boiler Sequencer

Scalable to 40 stages
4 to 20 mA/2-10 VDC setpoint control
LCD digital display with viewing window


Type BOILER
MODEL #

 BTUH
Input		 BTUH
Output		 Efficiency Shipping
Wt. lbs		 Width
inches		 Height
inches
 Depth
inches
Munchkin HC-200 199,000 197,000 99.00% 123 18.2 25.8 24.5
Munchkin HC-399 399,000 394,000 98.70% 217 18.2 25.8 44.3
Gasmaster HC-600 600,000 576,000 96.00% 435 54.5 68 24.5
Gasmaster HC-1000 1,000,000 960,000 96.00% 642 56.5 74 50
Gasmaster HC-1500 1,500,000 1,440,000 96.00% 1,086 64 88.5 62.5
Gasmaster HC-2000 2,000,000 1,920,000 96.00% 1,575 64 88.5 62.5
Gasmaster HC-4000 4,000,000 3,840,000 96.00% 3,122 71 90 80
Gasmaster HC-8000 8,000,000 7,680,000 96.00% 5,600 71 90 80


Type In
door		 Boiler MBTUH MBTUH Effic-
iency
Width Height Height Depth Wt.
  Out Model No. Input Output (%) (in.) Indoor Outdoor (in.) (lbs.)
TrueTherm In H-0042 42 30 84.0 11 33-1/4 n/a 26-1/2 95
TrueTherm In H-0066 66 47 83.0 11 33-1/4 n/a 26-1/2 105
TrueTherm In H-0090 90 64 83.0 11 33-1/4 n/a 26-1/2 105
TrueTherm In H-0135 135 95 83.0 18 33-1/4 n/a 26-1/2 135
TrueTherm In H-0180 180 129 83.0 18 33-1/4 n/a 26-1/2 140
TrueTherm Both H-133 136 112/109 82.7 14-1/4 45 38-1/2 24-1/8 160
TrueTherm Both H-182/H-181 181 148/145 82 18-1/4 62-5/8 48-3/8 26-1/2 191
TrueTherm Both H-260/H-261 264 216/211 82 22-3/8 62-7/8 48-3/8 26-1/2 214
TrueTherm Both H-330/H-331 334 274/267 82 25-3/4 63-3/4 48-3/8 26-1/2 234
TrueTherm Both H-400/H-401 399 327/319 82 29-14 65-3/8 48-3/8 26-1/2 253
TrueTherm Both H-514 512 419 82 32-3/4 57 44-1/8 29-1/2 475
TrueTherm Both H-624 627 514 82 37-1/2 57 44-1/8 29-1/2 485
TrueTherm Both H-724 726 595 82 41-5/8 57 44-1/8 29-1/2 635
TrueTherm Both H-824 825 677 82 45-3/4 57 44-1/8 29-1/2 645
TrueTherm Out H-926 926 759 82 52-3/8 n/a 46-3/4 32-1/2 785
TrueTherm Out H-1083 1083 888 82 59-1/4 n/a 46-3/4 32-1/2 865
TrueTherm Out H-1178 1178 966 82 63-5/8 n/a 46-3/4 32-1/2 925
TrueTherm Out H-1287 1287 1055 82 68-5/8 n/a 46-3/4 32-1/2 980
TrueTherm Out H-1414 1413 1159 82 74-7/8 n/a 46-3/4 32-1/2 1080
TrueTherm Out H-1571 1570 1287 82 81-1/8 n/a 46-3/4 32-1/2 1130
TrueTherm Out H-1758 1758 1442 82 89-3/8 n/a 46-3/4 32-1/2 1160
TrueTherm In H-962 962 789 82 52-3/8 76-1/8 n/a 32-1/2 705
TrueTherm In H-1125 1125 922 82 59-1/4 78-1/8 n/a 32-1/2 745
TrueTherm In H-1223 1223 1002 82 63-5/8 78-1/8 n/a 32-1/2 805
TrueTherm In H-1336 1336 1096 82 68-5/8 80-1/8 n/a 32-1/2 875
TrueTherm In H-1468 1467 1203 82 74-7/8 80-1/8 n/a 32-1/2 945
TrueTherm In H-1631 1630 1337 82 81-1/8 83-1/8 n/a 32-1/2 985
TrueTherm In H-1826 1826 1497 82 89-3/8 85-1/8 n/a 32-1/2 1035
TrueTherm In H-2100 2100 1722 82 61 68-1/4 n/a 64-3/4 1400
TrueTherm In H-2500 2499 2049 82 70 68-1/4 n/a 64-3/4 1580
TrueTherm In H-3001 3000 2460 82 81-1/4 68-1/4 n/a 64-3/4 1750
TrueTherm In H-3500 3500 2870 82 92-1/2 68-1/4 n/a 64-3/4 1920
TrueTherm In H-4001 4000 3280 82 103-3/4 68-1/4 n/a 64-3/4 2100
TrueDelta Both H-122 120 101 84 24-7/8 18 21-1/2 26-1/8 225
TrueDelta Both H-162 160 134 84 28-1/2 18 21-1/2 26-1/8 240
TrueDelta Both H-202 199 167 84 32-1/8 18 21-1/2 26-1/8 255
TrueDelta Both H-242 240 202 84 35-1/2 18 21-1/2 26-1/8 270
TrueDelta Both H-322 320 269 84 42-5/8 18 21-1/2 26-1/8 300
TrueDelta Both H-302 300 252 84 36 34 43-1/2 24-5/8 380
TrueDelta Both H-402 399 335 84 43 34 45 24-5/8 445
TrueDelta Both H-502 500 420 84 50 34 45 24-5/8 545
TrueDelta Both H-652 650 546 84 60-1/2 34 46 24-5/8 590
TrueDelta Both H-752 750 630 84 67-1/2 34 46 24-5/8 675
TrueDelta Both H-902 900 756 84 78 34 46 24-5/8 740
TrueDelta Both H-992 990 831 84 57-1/8 44-1/8 56-5/8 34-3/4 900
TrueDelta Both H-1262 1260 1058 84 68-1/2 44-1/8 58-1/8 34-3/4 1010
TrueDelta Both H-1532 1530 1285 84 79-7/8 44-1/8 58-1/8 34-3/4 1225
TrueDelta Both H-1802 1800 1512 84 91-1/8 44-1/8 60-1/8 34-3/4 1350
TrueDelta Both H-2002 1999 1679 84 102-1/2 44-1/8 60-1/8 34-3/4 1450
TrueDelta Both H-2072 2070 1738 84 102-1/2 44-1/8 60-1/8 34-3/4 1450
TrueDelta Both H-2342 2340 1965 84 113-7/8 44-1/8 61-1/8 34-3/4 1520