ACiQ · Single-Zone
ACIQ-018W-BL-MD / ACIQ-18ZS-HP230C
~$1,615approximate retailer price at last check, equipment only
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Best forHomeowners using a contractor who wants a long warranty and strong efficiency from a 1.5-ton head in a cool, not extreme, climate.
ACiQ is the house brand Ferguson sells to contractors, and the Standard 18k is its volume wall mount: 24.0 SEER2, 13.5 EER2 and 11.1 HSPF2 with an R-454B charge, heating down to -13°F and Wi-Fi built into the indoor head. The family carries nine AHRI certificate numbers, which reflects the number of indoor-outdoor pairings rather than one system. The big selling point is the warranty: 12 years on the compressor and 7 on parts with online registration, which is longer than the 10 and 5 years Senville offers on the Aura. At $1,615 against a $2,300 list it sits above the Leto and Pioneer Pro but well below the Senville Aura and the Gree Sapphire. Noise is 59 dBA outdoors and 20 to 54.5 dBA indoors. The -13°F floor means it is a cool-climate unit, not a Hyper Heat one; ACiQ's Extreme series covers that.
At 5°F it still makes 72% of its rated heat, according to the certified NEEP listing for this pairing. ACiQ rates it to keep running down to -13°F.
Pairing: ACIQ-18ZS-HP230C with ACIQ-018W-BL-MD. Checked October 8, 2026 on NEEP's ccASHP list; a different head or condenser posts different numbers.
No. ACiQ is Ferguson's house brand and is sold as a professional-install system. The lineset is sold separately and the unit needs charging and evacuation. R-454B is mildly flammable (A2L).
Twelve years on the compressor and 7 years on parts with online registration. That is longer than Pioneer's 5 or MRCOOL's base terms.
The floor is -13°F. NEEP certifies 18,000 BTU at 47°F and 13,000 BTU at 5°F, with a COP of 2.35, about 72 percent of nameplate. It is workable, not strong, for a cold climate.
About $1,615 against about $2,297, a gap of about $680. The Standard is rated 24.0 SEER2 and 11.1 HSPF2; the Extreme 21.4 and 11.0. The Extreme buys cold-weather capacity.
ACiQ · Single-Zone
~$2,297
Cold-climate homeowners working with a contractor who stocks Ferguson and wants the longest compressor warranty at this price.
ACiQ · Multi-Zone
~$3,350
Two large rooms where each needs an 18k head and the buyer wants a long registered compressor warranty at a low price.
Series photoMRCOOL · Single-Zone
~$1,615
Two-ton installs with a long lineset run, such as detached garages or outdoor units placed away from the house.