How much does HVAC cost in Hilo?
By Our research team · Last verified · Methodology
Most Hilo homeowners pay $3,900–$8,750 to replace a central AC of 3 tons on existing ducts, with $6,050 typical. Gas furnaces run $2,750–$7,850 and heat pumps $5,400–$12,300.
How we get this data- Typical
- $6,050
- Low end
- $2,950
- High end
- $13,150
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Get my fair quote →The typical Hilo price is $6,050, in line with the US typical of $6,200.
Hilo's price band
Hilo is pricier than 73% of the 195 US metros we price for HVAC work.
Most Hilo AC replacements land between $3,900 and $8,750, with $6,050 the typical price for a 3-ton system on existing ducts. Doing the furnace at the same time brings it to $6,400–$15,750, and a heat pump instead of an AC is $5,400–$12,300.
Under the federal Southeast standard, a new split central AC under 45,000 BTU must be at least 14.3 SEER2. Long, humid summers make sizing for moisture removal as important as raw cooling power, and heat pumps and gas furnace + AC systems are both common in Hilo.
Prices on this page are installed: equipment, labor, removal of the old unit and startup. A permit ($100–$240), a new line set ($200–$640) or duct repairs may be extra, so ask. Labor is usually 40–60% of the bill.
Comparing cities, or after the US-wide picture? See the national guide: HVAC cost in the USA.
$3,900–$8,750 to replace a 3-ton central AC on existing ducts in Hilo, installed — $6,050 typical. A heat pump runs $5,400–$12,300, a gas furnace $2,750–$7,850, and AC + furnace together $6,400–$15,750. Verified November 2026. Get free Hilo quotes →
- 3-ton central AC on existing ducts: $3,900–$8,750 ($6,050 typical)
- Heat pump, 3-ton: $5,400–$12,300; gas furnace: $2,750–$7,850
- AC + furnace together: $6,400–$15,750
- Mini-split: $2,450–$5,500 for one 12,000 BTU zone, $7,850–$17,700 for four
- Downtown Hilo runs 5–10% above the city average; UH Hilo & University Heights: standard to 5% below
Prices verified November 2026 · Cross-referenced against 45+ American pricing sources · See methodology
Installed prices for the Hilo metro, re-verified November 2026. Equipment-heavy jobs move less with local labor costs than service calls do.
| Service | Low | Typical | High |
|---|---|---|---|
| Central AC replacement, 3-ton (existing ducts)installed | $3,900installed | $6,050 | $8,750 |
| Central AC + gas furnace, replaced togetherinstalled | $6,400installed | $9,650 | $15,750 |
| Heat pump replacement, 3-ton (existing ducts)installed | $5,400installed | $7,850 | $12,300 |
| Central heat pump, high-efficiency with zoning (3-ton)installed | $9,850installed | $14,250 | $20,650 |
| Gas furnace replacement (80–96% AFUE)installed | $2,750installed | $4,500 | $7,850 |
| Ductless mini-split, 1 zone, 9,000 BTUinstalled | $2,150installed | $3,250 | $4,700 |
| Ductless mini-split, 1 zone, 12,000 BTUinstalled | $2,450installed | $3,850 | $5,500 |
| Ductless mini-split, 1 zone, 18,000 BTUinstalled | $3,150installed | $4,900 | $7,100 |
| Ductless mini-split, 1 zone, 24,000 BTUinstalled | $3,750installed | $6,100 | $8,650 |
| Ductless mini-split, 1 zone, 30,000–36,000 BTUinstalled | $4,700installed | $7,650 | $11,300 |
| Multi-zone mini-split, 2 zonesinstalled | $4,400installed | $6,400 | $9,850 |
| Multi-zone mini-split, 4 zonesinstalled | $7,850installed | $11,800 | $17,700 |
| Like-for-like AC swap: same-size mini-split, existing line setinstalled | $2,250installed | $3,450 | $5,100 |
| Install only: homeowner-supplied mini-split, 1 zonelabor only | $490labor only | $1,050 | $1,950 |
| Evaporative (swamp) cooler, roof-mountedinstalled | $1,300installed | $2,250 | $3,550 |
| Ductwork replacement, whole houseinstalled | $2,450installed | $5,400 | $9,300 |
| AC compressor replacement (out of warranty)per repair | $1,300per repair | $2,050 | $2,950 |
| AC repair, major: refrigerant leak fix + rechargeper repair | $590per repair | $1,250 | $2,450 |
| AC repair, minor: capacitor, contactor or drain lineper repair | $150per repair | $290 | $590 |
| AC tune-upper visit | $75per visit | $110 | $200 |
| Whole-system HVAC tune-up (AC + furnace)per year | $150per year | $220 | $440 |
| Duct cleaning, whole houseper home | $290per home | $440 | $680 |
| Smart thermostat, installedinstalled | $200installed | $300 | $440 |
| Old AC or furnace removal and disposalper unit | $100per unit | $240 | $490 |
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Prices verified November 2026 · Cross-referenced against 45+ American pricing sources · See methodology
Figures are for the Hilo metro area in November 2026. Rural edges may add trip fees; Downtown Hilo sits at the top of these ranges.
HVAC prices across Hilo
Where you live changes the quote. Downtown Hilo costs the most because of access and older buildings; UH Hilo & University Heights usually comes in at or under the city typical.
Downtown Hilo
- Installed
- $4,100–$9,650 installed
- Typical job
- $5,700–$7,650 / 3-ton AC swap
Older homes and mid-rise buildings. A like-for-like condenser swap is routine, but rooftop units and long line runs push quotes toward the top of the range.
Keaau & Puna
- Installed
- $4,000–$9,200 installed
- Typical job
- $5,550–$7,300 / 3-ton AC swap
A mix of renovated older homes and newer builds. Ductless mini-splits are common where old houses never had ducts.
UH Hilo & University Heights
- Installed
- $3,750–$8,600 installed
- Typical job
- $5,250–$6,800 / 3-ton AC swap
Lots of rental housing and smaller homes. Window units and single-zone mini-splits are common, and central systems tend to be smaller.
Kona & Waimea
- Installed
- $3,700–$8,750 installed
- Typical job
- $5,150–$6,950 / 3-ton AC swap
Mostly houses with simple access, which keeps labor down. Ask whether the quote includes a trip charge if you are at the edge of a company's service area.
Real-world HVAC costs in Hilo
Here's what common HVAC jobs cost in Hilo in 2026, a 3-ton central AC replacement on existing ducts, installed.
Swap a 3-ton AC on good ducts
Same spot, same size, matched indoor coil, old unit hauled away. Most Hilo jobs land near $6,050; a 17+ SEER2 unit adds about $2,050.
Replace the AC and gas furnace together
The usual move when both are 15+ years old. One install, one warranty, a matched system. Typical is $9,650.
Switch from AC + furnace to a heat pump
A 3-ton heat pump on existing ducts, typically $7,850. Keeping the furnace as backup (dual-fuel) runs $7,000–$16,700.
Cool one room with a mini-split
A 12,000 BTU single-zone mini-split for a bedroom, office or addition, typically $3,850. A 9,000 BTU unit for a small room is $2,150–$4,700.
Cool a whole home with no ducts
A 4-zone ductless system, typically $11,800. Adding ducts for central AC instead costs $2,450–$9,300 before the equipment.
How much does HVAC cost in Hilo?
$3,900–$8,750 installed, with $6,050 the typical Hilo price. The spread is mostly the equipment tier and the install: a standard unit on a ground pad is a one-day job, while rooftop condensers, attic air handlers and new line sets add hours.
Heating changes the math. A gas furnace alone runs $2,750–$7,850, a 3-ton heat pump $5,400–$12,300, and replacing the AC and furnace together $6,400–$15,750. For Hilo's climate, a heat pump or central AC is the usual fit.
Central AC, heat pump and furnace prices in Hilo (2026)
A 3-ton central AC runs $3,900–$8,750, a 3-ton heat pump $5,400–$12,300, and a gas furnace $2,750–$7,850, all installed.
| Line on the quote | Low | Typical | High |
|---|---|---|---|
| Central AC replacement, 3-ton (existing ducts) | $3,900 | $6,050 | $8,750 |
| Heat pump, 3-ton (existing ducts) | $5,400 | $7,850 | $12,300 |
| Gas furnace (80–96% AFUE) | $2,750 | $4,500 | $7,850 |
| Central AC + gas furnace together | $6,400 | $9,650 | $15,750 |
| Mini-split, 1 zone, 12,000 BTU | $2,450 | $3,850 | $5,500 |
| Mini-split, 2 zones | $4,400 | $6,400 | $9,850 |
| Mini-split, 4 zones | $7,850 | $11,800 | $17,700 |
| Ductwork replacement, whole house | $2,450 | $5,400 | $9,300 |
AC or heat pump in Hilo? A heat pump costs about $1,800 more than a 3-ton AC at the typical price, but it also replaces your heating. If your furnace is old, compare a heat pump with the $9,650 AC + furnace swap, not with the AC alone.
What moves an HVAC quote in Hilo:
- Size: a 2-ton system runs about $5,050 and a 5-ton about $8,500 at the typical price. Ask for a Manual J load calculation.
- Efficiency: the minimum here is 14.3 SEER2; a 17+ SEER2 two-stage unit adds about $2,050.
- Access: attic air handlers, rooftop condensers and tight closets add labor, most often in Downtown Hilo.
- Line set and coil: a new line set runs $200–$640, and the indoor coil has to match the new refrigerant.
- Season: spring and fall bring the best prices; a breakdown during a summer heat wave brings the worst.
Ask every Hilo contractor for the same things: tonnage, SEER2 rating, model numbers for both the outdoor and indoor units, and whether the permit and line set are included. Compare those, not just the total. Get a quote for your heating and cooling work →
HVAC cost in Hilo by home size
About $5,450 for a 2.5-ton AC (1,000–1,600 sq ft), $6,050 for 3 tons (1,600–2,000 sq ft), and $7,450–$8,500 for 4–5 tons in homes over 2,500 sq ft, typical Hilo prices on existing ducts.
Worked example: a 2,000 sq ft Hilo home with a 16-year-old AC and furnace. Replacing both runs about $9,650; switching to a 3-ton heat pump on the same ducts runs about $7,850; replacing only the AC is $6,050 but leaves an old furnace in place.
Homes over 2,500 sq ft or with two floors often have two systems or zoning. A high-efficiency zoned heat pump runs $9,850–$20,650, and adding zoning to an existing system $1,650–$4,400.
Hilo HVAC costs by system type
| System type | Cost | Best for |
|---|---|---|
| Central AC, 3-ton (existing ducts) | $3,900–$8,750 installed | Homes with sound ducts and a furnace or air handler to pair with |
| Ductless mini-split, single zone (9,000–18,000 BTU) | $2,150–$7,100 installed | One room, an addition, or a home with no ducts |
| Multi-zone ductless mini-split (2–4 zones) | $4,400–$17,700 installed | Whole homes with no ducts, room-by-room control |
| Heat pump, 3-ton ducted (heats and cools) | $5,400–$12,300 installed | Mild and hot climates; replacing an AC and electric heat |
| Gas furnace + AC, replaced together | $6,400–$15,750 installed | Cold climates with natural gas and old equipment on both sides |
| Gas furnace only (80–96% AFUE) | $2,750–$7,850 installed | When the AC is newer than the furnace |
| Dual-fuel: heat pump + gas furnace | $7,000–$16,700 installed | Cold climates: electric heat most days, gas on the coldest |
| Cold-climate heat pump, 3-ton ducted | $9,350–$23,600 installed | Northern homes leaving gas, oil or propane |
| Central heat pump, high-efficiency with zoning | $9,850–$20,650 installed | Big or two-story homes with hot and cold rooms |
| Evaporative (swamp) cooler, roof-mounted | $1,300–$3,550 installed | Dry Western climates only |
| Geothermal heat pump (ground loop) | $14,750–$34,400 installed | Large lots and long stays in one home |
| Window or through-the-wall AC | $210–$1,150 installed | Single rooms and renters; cheapest way to cool |
Equipment vs installation: the Hilo AC bill
On a typical $6,050 3-ton swap in Hilo, the condenser and matched coil are roughly $2,400–$3,650 and the rest is labor, materials, the permit and overhead. Labor usually makes up 40–60% of an AC replacement.
Buying the unit yourself rarely saves much: many contractors won't install customer-supplied equipment, and the ones who do charge $490–$1,950 or more for a mini-split and won't cover the parts. Brand warranties often require a licensed installer.
What's included in a Hilo AC replacement (and what costs extra)
A standard replacement quote covers the outdoor unit, a matched indoor coil, refrigerant, connection to your existing ducts and wiring, removal of the old unit, and startup. Common extras:
- Permit and inspection: $100–$240, often built into the quote
- New refrigerant line set: $200–$640 if the old one can't be reused
- New condenser pad: $40–$240
- Electrical panel upgrade: $830–$3,900, mostly when adding a heat pump or more capacity
Ask for the AHRI certificate showing the matched rating of your outdoor and indoor units. It proves the system you paid for is the one that was installed.
Hilo's climate
Under the federal Southeast standard, a new split central AC under 45,000 BTU must be at least 14.3 SEER2. Long, humid summers make sizing for moisture removal as important as raw cooling power, and heat pumps and gas furnace + AC systems are both common in Hilo.
System size
Each ton adds equipment cost: about $5,050 for 2 tons and $7,450 for 4 tons at the typical Hilo price. A Manual J load calculation often shows a smaller system will do.
Efficiency rating
The federal minimum for a new split AC here is 14.3 SEER2 for units under about 3.75 tons, and 13.8 SEER2 for bigger units. Higher ratings cost more upfront and pay back fastest where AC runs most of the year.
New refrigerants
New systems use A2L refrigerants (R-454B or R-32), so the indoor coil must match the outdoor unit. That's why condenser-only swaps are rare now, and why older R-410A systems cost more to service.
Ducts and access
Leaky or undersized ducts, attic air handlers and rooftop condensers add hours. Whole-house duct replacement runs $2,450–$9,300.
Location: Downtown Hilo vs UH Hilo & University Heights
Downtown Hilo jobs cost more because of access, parking and older buildings. UH Hilo & University Heights quotes usually sit at or a little under the city typical.
Season and urgency
Replacing on your schedule in spring or fall is cheaper than an emergency swap in a heat wave. After-hours repair labor runs $160–$240 an hour.
- Get three quotes for the same system.Same tonnage, same SEER2 rating, model numbers on every quote. Hilo quotes for the same 3-ton swap run anywhere from $3,900 to $8,750.
- Replace before it fails.If your system is 12–15+ years old, replace it in spring or fall. Emergency replacements in peak season leave no room to shop around.
- Right-size the system.Ask for a Manual J load calculation. An oversized AC costs more, cycles on and off, and leaves the house clammy.
- Check your utility for rebates.There is no federal tax credit for systems installed in 2026, but many utilities still pay rebates on efficient heat pumps and AC. Check before you sign; most require pre-approval or a listed contractor.
- Do the AC and furnace together if both are old.One install of both runs $6,400–$15,750, less than two separate jobs.
- Keep up with tune-ups.A yearly tune-up at $75–$200 catches weak capacitors and low refrigerant before they kill a compressor ($1,300–$2,950).
Before you pay a deposit to a Hilo HVAC contractor, get these in writing:
- Tonnage and how it was sized (a Manual J load calculation)
- Model numbers for the outdoor unit and the indoor coil or air handler
- The matched SEER2 (and HSPF2 for a heat pump) rating
- Whether the line set is new, flushed or reused
- Permit, inspection and removal of the old unit
- Thermostat, pad, disconnect and any electrical work
- Parts and labor warranty terms, and who registers the equipment
- Total price, deposit, and start and finish dates
How much does it cost to replace a central AC in Hilo?
$3,900–$8,750 for a 3-ton system on existing ducts, installed, with $6,050 typical in Hilo. Higher-efficiency units, attic or rooftop installs and new line sets push it up.
How much does a heat pump cost in Hilo?
$5,400–$12,300 for a 3-ton heat pump on existing ducts, about $7,850 typical. A high-efficiency zoned system runs $9,850–$20,650.
How much is a new furnace in Hilo?
$2,750–$7,850 for a gas furnace installed, about $4,500 typical. With a new AC at the same time, $6,400–$15,750.
How much does a mini-split cost in Hilo?
$2,450–$5,500 for a 12,000 BTU single zone, $4,400–$9,850 for two zones and $7,850–$17,700 for four.
How much is an AC tune-up in Hilo?
$75–$200 per visit. A yearly plan for AC and furnace runs $150–$440.
How much does AC repair cost in Hilo?
$150–$590 for common fixes like a capacitor or contactor. A refrigerant leak repair with recharge runs $590–$2,450, and a compressor $1,300–$2,950.
What size AC does a Hilo home need?
As a rough guide, 2.5 tons covers about 1,000–1,600 sq ft and 3 tons about 1,600–2,000 sq ft, but insulation, windows and climate change that. Ask for a Manual J load calculation instead of matching the old unit.
Is there a tax credit for a new AC or heat pump in Hilo?
No federal one for 2026: the 25C credit covered improvements made through December 31, 2025. Utility and state rebates may still apply, so check before you buy.
Do I need a permit to replace an AC in Hilo?
Usually, yes. Most US cities and counties require a mechanical permit for an AC or furnace replacement, typically $100–$240, and a licensed contractor normally pulls it.
How much does it cost to add ducts in Hilo?
$2,450–$9,300 for whole-house ductwork, before the AC or heat pump. In many older homes a multi-zone mini-split ($7,850–$17,700 for four zones) costs less.
Prices verified November 2026 · Cross-referenced against 45+ American pricing sources · See methodology
Prices for the Hilo metro area, November 2026. Outer suburbs may vary.
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