Della · Single-Zone
12K1VR-20S-JPB+
~$850approximate retailer price at last check, equipment only
Best forBudget buyers who already own (or will rent) a vacuum pump and want maximum cooling per dollar over install convenience.
Della's 12k lineup is the JPB, Vario, Motto, Serena, and Umbra series, and this is the Home Depot JPB: 20 SEER2 on 115V for about $850. Della is the cheapest way into a name-brand-ish 12k heat pump, and owners genuinely like the cooling performance, quiet operation, and app for the money. But it is not a true DIY unit: the lineset isn't precharged or quick-connect, so you're flaring, evacuating with a vacuum pump, and leak-testing like a pro would — Della's own tool-rental program is the tell. Owner feedback is classic budget-brand: most units run fine for years, but when one doesn't, support is slow, and the lifetime-parts warranty requires registration within 100 days and gets watered down for self-installs. Heating stops at 5°F, so treat it as a cooling-first unit with shoulder-season heat. Buy it for the price, not the install experience.
No current listing on NEEP's cold-climate heat pump list. Della rates it to keep running down to 5°F; without a listing there's no certified 5°F capacity figure to check that claim against.
No, and this is the #1 surprise in owner reviews: the condenser is precharged, but there's no quick-connect lineset. You must flare-connect the 16.4-ft lines and pull a vacuum before releasing refrigerant. Della leans into it with a mail-order tool rental kit (vacuum pump, gauges, flare tools) for around $60, which makes the pro-style install achievable — but it's a real skill step up from torquing quick-connects.
This is its weak spot. Heating is rated only down to 5°F and Della publishes no HSPF2, so treat it as a cooling-first unit with supplemental heat for shoulder seasons. If winter heating is a primary requirement, spend more on a unit with published cold-weather specs.
Probably not — it runs on 115V, so a dedicated standard circuit covers it. That's a genuine advantage for garages and bedrooms where running a new 240V circuit would add hundreds to the project, and at roughly $850 it's among the cheapest name-brand paths to 20 SEER2 cooling.
Two big ones: you must register within 100 days to get the limited lifetime parts coverage, and coverage is reduced for installs not done by a licensed HVAC tech. If you self-install with the rental kit, understand you're likely accepting the shorter base terms. Owners also report slow, scripted customer support when boards or sensors fail, so keep expectations realistic.
Around 450-550 sq ft — a large bedroom, office, or garage bay. Della's 20 SEER2 rating means efficient cooling for the money, and Wi-Fi with Alexa/Google control is included, which many budget rivals still charge extra for.
Della · Single-Zone
~$780
Buyers with a 230V circuit who want more efficiency and a lower heating floor than Della's 115V units, and are comfortable doing a flare-and-vacuum install.
Della · Single-Zone
~$770
Value-focused cooling for bedrooms and offices in moderate climates.
Della · Single-Zone
~$1,250
Cold-climate buyers who want a lower price than the NEEP-listed brands and will accept the maker's own claims about cold-weather output until certified numbers exist.