MRCOOL Universal Series 36K BTU, 3 Ton Air Handler - Multiposition (UAH18036-O)

MRCOOLSKU: UAH18036-O
47 reviews

Price:
Sale price$1,860.96 Regular price$2,499.95SAVE 25%
In Stock
Estimated delivery: Sep 9th-18th
Free Curbside Delivery — carrier calls to schedule

Free Curbside Delivery

Included on every order
Ships free by freight carrier. Your order leaves the warehouse tracked, on a palletized freight truck.
The carrier calls ahead. You'll schedule a delivery window that works for you before the truck heads out.
Delivered to the curb. The item is placed at the end of your driveway. Moving it inside is your responsibility, so plan to have help on hand for heavy pieces.
Before you sign: inspect the packaging for damage. Signing the delivery receipt confirms it arrived in good condition.

Description

The MRCOOL® Universal® Series 36K Air Handler offers a high-efficiency, performance-driven solution for year-round indoor comfort. Designed to meet the needs of modern homeowners, it’s the perfect upgrade for those looking to reduce energy costs without sacrificing heating and cooling performance. Built for flexibility, the air handler features a multi-position design that allows for vertical, horizontal, or downflow installation. This makes it adaptable to a wide range of home layouts and ideal for tight or limited spaces.

Its compact footprint simplifies placement, while compatibility with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately) makes installation even easier. This innovative line set comes pre-charged and sealed, eliminating the need for vacuuming, flaring, or handling refrigerant—saving both time and installation cost. For enhanced functionality, the air handler supports optional Universal® Series Heat Kits, which can boost heating capacity during cold weather or serve as emergency backup heat during unexpected temperature drops. Inside, the system features an advanced M-shaped evaporator coil that increases the surface area for better heat exchange, improved airflow, and higher energy efficiency.

Quiet operation ensures it blends seamlessly into your home environment, producing sound levels comparable to everyday conversation or a running dishwasher. The coil is constructed from 100% aluminum for superior corrosion resistance and long-term durability.

Backed by a 10-year parts warranty and a 2-year limited labor warranty, the MRCOOL® Universal® 36K Air Handler delivers reliable performance and peace of mind.

DIMENSIONS & WEIGHT
Net Dimensions (In)
21.5 D x 53.98 H x17.52 W
Net Weight (Lbs)
149.25
Gross Depth (In)
31.1
Gross Height (In)
20.47
Gross Width (In)
57.09
Gross Weight (Lbs)
182.1
GENERAL INFORMATION
Mount Type
Multi-Position
Color
Dark Grey
Metering Device
EXV
CAPACITY & PERFORMANCE
CFM
1236.1/1147.8/1059.5/971.2/N\A
Tonnage
3
Cycle
60
COMPRESSOR & MOTORS
Number Of Speeds
4
NOISE LEVELS
Decibel Rating (Dba)
48/46.5/45/33/N\A
Decibel Rating Low (Dba)
33
Decibel Rating High (Dba)
48
ELECTRICAL REQUIREMENTS
Voltage (V)
115/208/230
Phase
1
Max Fuse Breaker (A)
15
Min Circuit Ampacity (A)
6-Aug
REFRIGERANT & PIPING
Refrigerant Type
R-454B
Max Lineset Length (Ft)
246
Liquid Line Size
8-Mar
Suction Line Size
4-Mar
FILTER & HEATING
Filter Type
Replaceable
Filter Size
16 x 20 x 1
Auxiliary Heater Included
No
Auxiliary Heater Available
Yes
Auxiliary Heater Sizes
  • 5 KW
  • 8 KW
  • 10 KW
  • 15 KW
  • 20 KW
SAFETY
UL Listed
Yes
CSA Listed
Yes
ETL Listed
Yes
Contains Electronics
Yes
Contains Chemicals
Yes
Contains Compressed Gas
Yes
Proposition 65 Warning
Yes
WARRANTY
Base Warranty
10 Year Parts
Base Parts Warranty
10 Years
Base Labor Warranty
2 Year
Shipping
  • Free Shipping on all orders.
  • Large Appliances: Ship via Curbside Delivery — the carrier delivers to your property but not inside your home.
  • Small Items: Ship via standard ground delivery (FedEx or similar), such as small appliances, range hoods, sinks, faucets, and accessories.
Full shipping policy
Returns
  • 30-Day Return Policy: Return requests must be submitted within 30 days of your delivery date. We cannot process returns after this period.
  • Return Requirements: Products must be unused, uninstalled, and in their original packaging (including box and pallet) to qualify.
  • Restocking Fee: A restocking fee may apply and varies by brand.
Full returns policy
Authorized MRCOOL Dealer
Full manufacturer warranty on every MRCOOL product we sell.

Customer Reviews

Based on 47 reviews
87%
(41)
11%
(5)
2%
(1)
0%
(0)
0%
(0)
J
Jim M. (Los Angeles, CA)
Easy to install and working great.

I needed to replace another unit that a previous contractor didn't do any part of that installation correctly, and the condensation line was leaking inside the house, running down the wall since that installation!! The indoor coil was 1-1/2" out of level, the line set wasn't wrapped, the electrical was tapped into the same circuit as the garage light and outlets...it was a mess.

It took me more time to demo the old unit out than to install the one I bought from you.

Thank you.

B
Bill (Philadelphia, PA)
Very pleased.

Very pleased with the price, delivery, ease of installation, and above all during this heatwave it is working excellently.

N
Natalie N. (San Jose, CA)
Perfect for our needs!

I ordered a 2 zone unit for the bedrooms in our home. It took a few months to arrive (manufacturer issue, nothing to do with HOD, and we were contacted on more than one occasion with an order update which was much appreciated!), but when it did arrive was very easy to install. Both the heat and AC function work perfectly, and our family is very happy!

R
Robert W. (Marietta, GA)
Decent Company

I ordered a HVAC system and it arrived in a timely manner and with no apparent issues. I thought the system was defective once installed but it was the installers fault who wired it wrong. My only issue would be the fee (30% I believe) to return a defective item within the 30 day return policy. If it is defective the customer shouldn't have to pay a fee to return an item that is not operating as designed. Other than that this is a good company.

P
Peter K. (Phoenix, AZ)
Pretty Easy Install and Works Great!

Installed my own central HP system. It was a bit of work but nothing beyond a person with basic mechanical and electrical skills. It took me a while because I had to remove the existing electric forced air furnace from a pretty tight place. Some custom sheet metal work and a bit of custom electrical too. Worked perfectly when powered up and I actually like the thermostat provided, although I wish it was clearer how to set up a temperature set-back schedule. Pre-charged refrigerant piping was something new and I liked that too. The best thing is that my electric utility forked out $4,000 and that paid for the unit!

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