Wallmaster WHVT14B33B
through-the-wall air conditioner · 14,300 BTU cooling · fits ~715 sq ft
A through-the-wall AC rated 14,300 BTU — enough cooling for a room of roughly 715 square feet (the 20-BTU-per-square-foot rule).
What actually decides this purchase
We publish 33 units at 14,000 BTU. They run within $34 a year of each other — but they sell for $480 to $995, a 2.1× spread. Efficiency is not what decides this purchase at 14,000 BTU; price, noise and whether it fits your window are. Here is where this unit lands.
We have no tracked price for this unit, so here is the rule instead. At 14,000 BTU the field runs $480 to $995, median $565, and every one of them runs within $34 a year of every other — so price is the decision and efficiency is the tiebreak. On the certified specs we do hold, this one ranks 33rd of 33 in its class. If the price you are quoted is above $565, buy something else. Worth comparing against the TCL T14WV9SB at $480 and the Midea MAW14RV1CCWT at 41 dBA for $565.
Price
Not tracked
We have no verified retail listing for this certificate. Units at this size run $480–$995.
Noise
Not published
The maker publishes no dBA figure we could verify, and noise is not part of the DOE certification. It is the most common complaint about window units, so treat its absence as a real unknown.
Sleeve opening
Measure first
No trustworthy cabinet width on this certificate, so we will not state a fit range.
Circuit
230V needed
Needs a dedicated circuit. Budget an electrician before you buy.
We do not have price or noise or sleeve opening for this unit and will not estimate them. Everything above that carries a number is from a certification record or the manufacturer's own published sheet.
Buy this unit
No verified online listing
A through-the-wall AC is a self-install unit: you set it in the window (or wall sleeve), no contractor or refrigerant charge needed. We have not matched a retail listing for this exact model, so we are not linking one. Search your usual retailer for the model number above — and check the certified specs here against whatever you find.
Sized for ~715 sq ft — measure your room and check your window type before you buy.
The Verified Label — every certified spec
certified 2026-06-17
status: Active
Cooling & efficiency — source: ENERGY STAR / DOE
Fit & install — does it fit your window?
Efficiency & running cost — computed by Verified HVAC Data
Worth keeping in proportion: every unit in the 14,000 BTU class runs within $34 a year of every other. The gap between the cheapest and dearest to buy at this size is 15× larger. Efficiency is the smallest number on this page, which is why it is not at the top of it.
Refrigerant & identity
Compare similar room ACs
Frequently asked questions
Is 14,300 BTU right for my room, or should I size up?
About 715 square feet is the guide figure, and 33 certified units sit on that shelf. The next shelf up is 15,000 BTU (7 units), about 750 sq ft. Below it, 13,000 BTU (5 units) covers about 650 sq ft. Between two shelves, take the smaller one: oversizing is the usual reason a unit cools but leaves the room clammy, which our sizing calculator explains.
Does the Wallmaster WHVT14B33B need a special outlet?
Yes. It runs on 230 volts, not the 115-volt outlet a bedroom or living room normally has, so it needs a dedicated circuit installed by an electrician. Budget for that before you buy: most units in its 14,000 BTU class are 115-volt, so a same-size alternative may avoid the wiring entirely.
Does the Wallmaster WHVT14B33B heat as well as cool?
Yes — it is certified with a heating mode, so it works as a shoulder-season heater as well as an air conditioner. Only 30 of the 389 room ACs we publish do. It is supplemental heat for one room, not a replacement for a home heating system.
Does the Wallmaster WHVT14B33B qualify for efficiency rebates?
It meets ENERGY STAR Most Efficient, the top tier some utility rebate programmes require. 12 of the 33 units in its 14,000 BTU class reach that tier, so it is one of several options at this size. Rebates are set by your state and utility, not by the manufacturer — check the programmes for your area.
Does the Wallmaster WHVT14B33B need a wall sleeve?
Yes — through-the-wall units slide into a wall sleeve. This unit measures 27" wide, 16" tall and 21" deep and weighs about 115 lb. Check that your existing sleeve opening matches, or buy the maker's sleeve.
Sources. Certification and CEER from ENERGY STAR room-AC data and the DOE compliance certification database. Cooling capacity, dimensions and refrigerant are the manufacturer-certified values. Annual running cost, suggested room size and the percentile are computed by Verified HVAC Data from published ratings and EIA U.S. average electricity prices — see our methodology. Refrigerant GWP is the IPCC value. We publish no star ratings and take no payment for placement. "Not published" means the source registry doesn't disclose it — we never fill a spec with a guess.