Costway Thundrive 2-Zone 18,000 BTU (9K + 9K) 208-230V 20 SEER2
Costway Thundrive · 18,000 BTU · 230 V · 2 zones
This system uses R-410A, the refrigerant the EPA is phasing down. In May 2026 the EPA dropped the January 1, 2026 installation deadline for R-410A units made before 2025, so remaining stock can still be installed, but refrigerant for future repairs will get scarcer and dearer. New designs use R-32 or R-454B.
Where to buy
| System | Heads | Volts | Store | Checked | Buy | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Costway Thundrive 2-Zone 18,000 BTU (9K + 9K) 208-230V 20 SEER2 | 18k BTU | 9k + 9k | 20 | -- | -4°F | 230 V | -- | Costway | $1,400 | $77.78 | today | View deal |
$/1k BTU is the price divided by thousands of BTU/h of rated cooling capacity, so a 9k head and a 36k multi-zone compare fairly. It ignores efficiency and cold-weather output: check SEER2, HSPF2 and "Heats to" for those, or let thesizing builder weigh them for your rooms.
Will it fit my room?
Enter your rooms and ZIP code in the sizing builder: it estimates the cooling and heating load, checks this unit's output at your winter design temperature, and compares it against every other system that fits.
Electrical: 230 V, dedicated 15–20 A double-pole breaker (check nameplate MOCP).