MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set
Component — Not a Complete System
This is the outdoor unit only. To run, you also need a matching indoor air handler and a refrigerant line set. Looking for the complete system instead? Browse complete 18,000 BTU systems.
SKU CENTRAL-18-HP-C-230-25
Customize it — compatible add-ons only
Same-capacity Central Ducted air handler this condenser is rated with — required to run.
Heat strips made for the MRCOOL Central Ducted air handler — sized in kW by your installer.
MRCOOL 24V smart thermostat for ducted systems — Wi-Fi control and scheduling.
Maintenance kit and coil cleaner keep efficiency (and the warranty) healthy.
Universally compatible tools and care items — maintenance kit, coil cleaner, install tools.
Sizing Help
Not sure if 18K BTU is right for your space?
Proper sizing prevents short-cycling, high bills, and premature failure. Our sizing tool takes 60 seconds.
Resources
Brochures & Manuals
Description
MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set
What's in the Box
Here's what you'll receive with your order
Outdoor Condenser Unit
Heat pump condenser with Gold Fin anti-corrosion coating
Installation Hardware
Mounting brackets and hardware kit
Owner Manual
Installation and operation guide
Key Specifications
18000BTU
Cooling Capacity
208-230V
Voltage
1
Zone Capacity
18000BTU
Heating Capacity
MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 18,000 BTU
The MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set delivers 18,000 BTU of cooling and heating capacity, sized for spaces up to 900 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit handles medium primary rooms, master suites with attached bath, converted garages, and workshops. If your space includes a sunny west-facing wall or a finished bonus room above it, lean toward the upper end of the coverage range.
Efficiency & Operating Cost
This unit is rated at 22 SEER2. SEER2 measures seasonal cooling efficiency — higher is better — and 22 puts this in the premium efficiency tier. Running the unit 8 hours a day at full load draws roughly 196 kWh/month — about $31/month at the US average $0.16/kWh residential rate. Real-world draw is usually 30–50% lower because inverter compressors modulate down most of the time.
Cold & Hot Weather Operating Range
This system produces rated heating capacity down to -1375.2°F ambient, putting it in hyper-heat territory suitable for northern climates where ducted gas is the usual backup. On the cooling side the compressor runs down to -13122°F outdoor ambient, useful for server rooms, grow rooms, and any space that needs year-round cooling.
Power & Electrical Requirements
Power requirement: 208-230V 1-phase 60Hz (standard US residential 240V service). Minimum circuit ampacity is 18A with a maximum overcurrent protection of 30A. Wire the outdoor unit with 10 AWG copper on a dedicated 30A double-pole breaker (or single-pole at 120V), with a disconnect within sight of the condenser per NEC 440.14.
Install Difficulty — Professional Install
This is a professionally-installed condenser that requires a licensed HVAC technician with EPA 608 certification. The tech will pull a vacuum on the line set to 500 microns, pressure-test with nitrogen, release the factory charge, and commission per MrCool's startup procedure. Budget 1 full day for install on a single-zone system. A 25ft line set is included in the box — sufficient for most indoor-to-outdoor runs where the condenser sits on a ground pad directly outside the serviced room. Ships with R-410A refrigerant. R-410A is a mature, widely-serviced refrigerant; service technicians and parts are available at any HVAC supply house.
Product Details
MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set
Specifications
| Cooling Capacity | 18,000 BTU |
| Heating Capacity | 18,000 BTU |
| SEER2 Rating | 22 |
| Voltage | 208-230 V |
| Refrigerant | R-410A |
| Zone Capacity | 1 zones |
| SEER Rating | 22 |
| Phase | 1 |
| Refrigerant Type | R-410A |
| Refrigerant Charge | 56.44 oz |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
Features
- Includes features such as timer mode, auto cool mode, fan only mode, and more
- Wired thermostat included (.78 in x 4.72 in x 4.72in)
- Multi position installation
- Optional heating kit avaible
- R-410A environmentally friendly refrigerant
- 10 year parts and labor warranty*
Frequently Asked Questions
Everything you need to know about this product
What size room will the MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set cool?
Do I need a licensed HVAC installer?
Is this unit eligible for the federal 25C tax credit?
How cold can it get outside before this heat pump stops heating?
What electrical circuit do I need for installation?
How fast does HVACZAR ship this unit?
What if it arrives damaged or I change my mind?
What is the warranty on the MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set?
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Do you offer returns?
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We deliver the MRCOOL 18k BTU 19.2 SEER Condenser - 25 foot MRCOOL Pre-Charged Line Set to all 50 states via FedEx, UPS, and truck freight. Each state page lists local rebate programs and utility incentives.