EL18KSLV-024-230
Lennox ML180DF045E36AK 80% AFUE 44,000 BTU 14.5" Downflow Gas Furnace
Lennox ML180DF045E36AK 80% AFUE 44,000 BTU 14.5" Downflow Gas Furnace
SKU:ML180DF045E36AK
In stock
Merit single-stage gas furnace: 44,000 BTU input at 80% AFUE in a 14.5-inch A cabinet that fits A-size Lennox coils. Call (913) 364-0070 to confirm your match.
- Fast shipping
- Expert phone help
- Manufacturer warranty
- AHRI-matched pairings
- Licensed contractor install required for warranty
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Shipping policy
Free shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. If your cart has a qualifying item, your whole order ships free. Most orders ship 2–5 business days; delivery 2–10 days. Small packages UPS/FedEx; large HVAC = LTL curbside + liftgate typical. Signature/appointment for freight; inspect before signing. Call (913) 364-0070 for help.
Returns and refunds
30-day return window from receipt; unused/original packaging + proof of purchase. Start return via info@hvacusa.store or (913) 364-0070 before shipping back to 9411 N Tracy Ave, Kansas City, MO 64155. Sale items/gift cards/custom not returnable. Approved refunds to original payment within ~10 business days after inspection.
About The Lennox ML180DF045E36AK
Description
The Lennox ML180DF045E36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.
Key specs
- Heating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage
- Cabinet: A size, 14.5 inches wide, downflow
- Blower: 1/2 hp constant torque motor, 355 to 1,430 cfm, for 1.5 to 3 tons of cooling
- Temperature rise: 15 to 45°F
Reading the model number
ML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, A is the 14.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.
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 A in its size code.
The AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL18KSLV 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. 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 ML180DF045E36AK 80% AFUE 44,000 BTU 14.5" Downflow Gas Furnace
AHRI-matched equipment that works with this unit. Add a full system or individual pieces.
Filter matches
Coil
ML17KC2-024-230
AHRI number 216048987
EL16KC1-018-230
AHRI number 215658548
EL16KC1-024-230
AHRI number 215658936
ML14KC1-018-230
AHRI number 215578749
ML14KC1-024-230
AHRI number 215580554
EL15KC1-018-230
AHRI number 215662862
EL16KC1-030-230
AHRI number 215659863
ML13KC1-018-230
AHRI number 215584902
ML14KC1-030-230
AHRI number 215581638
EL15KC1-024-230
AHRI number 215663350
ML13KC1-024-230
AHRI number 215585038
EL15KC1-030-230
AHRI number 215663890
ML13KC1-030-230
AHRI number 215586729
ML17KC2-024-230
AHRI number 218467610
ML17KC2-024-230
AHRI number 218467611
ML17KC2-024-230
AHRI number 218467612
ML17KC2-024-230
AHRI number 218467613
ML17KC2-024-230
AHRI number 218381655
EL18KSLV-024-230
AHRI number 218467731
No AHRI-matched systems for this filter.
Specifications
| Specification | Value |
|---|---|
| Manufacturer | Lennox |
| SKU | ML180DF045E36AK |
| Product type | Furnace |
| Furnace width | 14.5" |
| Input (BTU/h) | 44,000 |
| 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) | 113 |
| Stages | Single |
| Cabinet width (in) | 14.5 |
| Output (BTU/h) | 36,000 |
| Vent connection | 4 in. round flue connection |
| Cabinet size letter | A |
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). Will-call available at our Kansas City warehouse. Call (913) 364-0070 for liftgate, scheduling, or commercial delivery. |