ML14KC1-024-230
About The Lennox ML180DF070E36B
Description
The Lennox ML180DF070E36B is a Merit Series single-stage gas furnace rated 66,000 BTU input and 54,000 BTU output at 80% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.
Key specs
- Heating: 66,000 BTU input, 54,000 BTU output, 80% AFUE, single-stage
- Cabinet: B size, 17.5 inches wide, downflow
- Blower: 1/2 hp constant torque motor, 430 to 1,475 cfm, for 1.5 to 3 tons of cooling
- Temperature rise: 30 to 60°F
Reading the model number
ML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and DF is downflow. 070 is the 66,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.
What it pairs with
Downflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.
The AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.
Sizing and fit
Size the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.
This model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.
Warranty and registration
HVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.
Shipping and help
It ships from our Kansas City warehouse to the lower 48 states and D.C. It ships free when your cart also has an item that ships free, except to Washington, Oregon, and Idaho. For Alaska, Hawaii, Puerto Rico, other U.S. territories, or an APO or FPO address, call or text us for a quote. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.
Paired With — AHRI-matched systems for Lennox ML180DF070E36B 80% AFUE 66,000 BTU 17.5" Downflow Gas Furnace
AHRI-matched equipment that works with this unit. Add a full system or individual pieces.
Filter matches
Coil
ML14KC1-030-230
AHRI number 218805926
EL18KCV-024-230
AHRI number 218467359
EL18KCV-024-230
AHRI number 218467360
EL18KCV-024-230
AHRI number 218467361
EL18KCV-024-230
AHRI number 218467362
EL18KCV-036-230
AHRI number 218467414
EL18KCV-036-230
AHRI number 218467415
EL18KCV-036-230
AHRI number 218467416
EL18KCV-036-230
AHRI number 218467417
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Specifications
| Specification | Value |
|---|---|
| Manufacturer | Lennox |
| SKU | ML180DF070E36B |
| Product type | Furnace |
| Furnace width | 17.5" |
| Input (BTU/h) | 66,000 |
| AFUE (%) | 80 |
| Voltage | 120 |
| Phase | 1 |
| Frequency (Hz) | 60 |
| Electrical | 120-1-60 |
| MOCP | 15 |
| Height (in) | 33 |
| Depth (in) | 27.75 |
| Shipping weight (lb) | 128 |
| Stages | Single |
| Cabinet width (in) | 17.5 |
| Output (BTU/h) | 54,000 |
| Vent connection | 4 in. round flue connection |
| Cabinet size letter | B |
Ordering
| Detail | Value |
|---|---|
| Lead time | Ships from our Kansas City warehouse. Most in-stock items leave in 1 to 3 business days; special-order equipment is confirmed by phone before ship. |
| Freight note | Ships residential freight (curbside) with liftgate delivery added automatically. Pickup available at our Kansas City warehouse. Call/Text (913) 364-0070 for scheduling or commercial delivery. |





