OEM Appliance Approvals
Boiler Manufacturer
Aerco AM 399/500/750/1000

BMK 750/1000/1500/2000/2500/3000/6000

MLX 303/454/606/757/909/1060

MLX EXT 321/481/641/802/962/1123/1530/1912/295/2677/3060

Allied Engineering Co. Intergas HSE-125 N/P, 145 N/P
Bosch Greenstar Boilers ZBR 16/21/28/35/42

Greenstar Combi Units ZWB 28/35/42

Buderus GB312 Series

(Approval Letter)

Dynaforce 300/350/400/500/600/800
Dynamax 78/97/146/194/243 BTU
Crown Maui

ECO King  
ECR Dunkirk Helix VLT Wall Hung Boilers 50/75/100/150/200/299 KBTU

Utica Boiler SSC Wall Hung Modcon 50/75/100/150/200/299 KBTU

Energy Kinetics Accel CS Boiler
Geminox FCX

Heat Transfer Products Elite
IBC SL 20-115, 30-175, 45-260, 80-399, 80-399 HP
VFC 15-150, 45-225

Laars Neotherm 080-850
Neotherm LC

Mascott II
Lochinvar Armor (N,L) 151/201/286/400/501/601/701/801
Knight KB 080-285
Knight XL KB 400/501/601/701/801
Shield SNR 150/200
Shield SNA 150/400/500
Sync (N,L) 1000/1300/1500
Wall Hung (N,L) 055/085/110/155/199/285/399

Mestek RBI Infinite Series
NY Thermal Trinity LX 150-800
Trinity TI 100-400
Trinity TFT 60-399
Trinity TX 51-151
Peerless Boilers Purefire 50/140, 210, 399

Pinnacle Oil

(Approval Letter)
PCH 18B-H, PCH 34B-H, PCH 50B-H, PCC 34-H, PCI 18/8-H, PCI 34/20-H

QHT/Biasi Riva Plus Combi
Biasi M210.32CM and M210.32SV Riva Advance

Firebird Series
Slant Fin VSL160
CHS 85, 110, 155, 175, 200, 250, 300, 399
Triangle Tube Challenger Solo CC85s/CC105s/CC125s/CC150s

Prestige Trimax Solo 60/110/175/250/399

Prestige Excellence PTE 110

US Boiler/Burnham Burnham ALP 080-500
Viessman Vitodens 100-W WB1B series
Vitodens 200-W WB2B series
Vitocrossal 200
Weil McLain ECO
Water Heater Manufacturer
Aerco Innovation 600/800/1060/1350

AO Smith Commercial Water Heaters Only: Refer to each appliance’s specific installations instructions to verify use.    
Bock optiTHERM OT200, OT250, OT299, OT300, OT400, OT500 Series  
Greentherm Series, C 950 ES

Greentherm Series, C 1050 ES

Therm C1210 ES and ESC

Bradford White Condensing/Direct Vent Commercial, Power Vent & Direct Vent Residential Models

Eternal GU145, GU195
Giant UG50-65 and UG50-59
GSW Power Direct Vent Water Heater
John Wood Water Heater
(Approval Letter)
JW4040SN-PDV-ES2, G4040SP-PDV-ES2, JW5040SNPDV-ES2, G5040SP-PDV-ES2, JW85065SN-PDV-ES2

Navien CH Models
NP Models

NPE Models

NR Models

NCB Models

(Approval Letter)
NRC and NCC Series

Furnace Manufacturer
(Approval Letter)
All Condensing Gas Furnaces

(Approval Letter)
All Condensing Gas Furnaces

Armstrong Air
(Approval Letter)
All Condensing Gas Furnaces

ArcoAire 90+ Furnaces

(Approval Letter)
900 Series

(Approval Letter)

Comfortmaker EC97 and VC97

(Approval Letter)
All Condensing Gas Furnaces

Day & Night 90+ Furnaces

Ducane All Condensing Gas Furnaces

Goodman & Amana (Approval Letter) 90+ Furnaces

Heil 90+ Furnaces

Keeprite 90+ Furnaces

(Approval Letter)
All Condensing Gas Furnaces

(Approval Letter)
2012 Gas Furnaces

Rheem 90+ Multi-Poise Unites

Ruud All Condensing Gas Furnaces

Tempstar 90+ Furnaces

(Approval Letter)
All Condensing Gas Furnaces

Wolf Steel
(Approval Letter)

Napoleon Furnace Series

Continental Furnace Series

Empire Comfort Systems Mantis F/P

US 90