FOR PERTH HOMES STILL ON EVAPORATIVE
An evap can’t heat in winter. It can’t cool when summer turns humid.
$8.24 a day. The cost of a Bacon & Egg McMuffin.
A 16kW Hisense reverse-cycle ducted system heats in July and cools properly in February, including on humid days when an evap can’t. $14,999 supplied and installed, evap removal included. Sixty months at zero interest, Hisense is paying it through their Better Air promotion. CrispAir installs it, as we have in Perth since 1986.
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Or pre-approve privately first · 10 min · no home visit yet
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4.6 / 5
354 Google reviews
The evap your builder installed to tick a box.
Most evaps in Perth homes weren’t chosen, they were inherited. Builders put them in so they could write “air conditioning included” on the brochure without putting the cost of reverse cycle into the build price. The buyer signed, moved in, and found out across the next few summers what evap actually does.
It cools on a dry 38-degree day. That’s the one condition it’s good at. The rest of the Perth year, it doesn’t do the job. It can’t heat in July, so most evap households have separate gas heaters or column heaters running through winter. On a humid summer afternoon, the air outside is already heavy with moisture, so the wet pads have nothing dry to evaporate into. The fan still runs, but it’s pushing warm damp air through the ceiling. And the doors have to stay open to vent the moisture back out, which is why your evap house has flies in summer and loses warmth in winter.
For a decade or two it felt like too much money and too much disruption to swap it out. Now that you can have your air properly conditioned for $8.24 a day, the calculation has shifted.
The maths, with the evap swapped out.
$8.24
PER DAY · 60 MONTHS · 0% INTEREST
Indicative pricing for the standard 16kW Hisense system installed in place of an evap, on the home spec below. Your actual number depends on where the evap currently sits, what we have to make good after removal, and the Better Air term you qualify for. Confirmed in writing on the day we visit.
The exact home this price covers.
We price the $14,999 offer for one home type, because most Perth homes still running evap match it: a four-bedroom single-storey on a non-truss roof with good roof-space access. If your home looks like that, the answer is $14,999. If it doesn’t, we tell you on the first call.
Non-truss
Roof, good access
Honest disclosure on the home limits. If your home is two-storey, has a truss roof, sits on a tight lot with restricted access, or is noticeably bigger than four bedrooms plus a study, $14,999 won’t cover it. The trade is full of operators who quote $14,999 on a flyer and find $4,000 of “extras” once they’ve got the deposit. We’d rather tell you on the phone.
Honest disclosure on the ductwork. Anyone who tells you they can save you money by reusing your old evap ductwork on a reverse-cycle install is either lying or about to do a bad job. Evap ducting is sized for low-pressure, high-volume air pushed through wet pads. Reverse-cycle ducting is sized for higher-pressure cooled and dehumidified air with insulated runs. Reusing evap ductwork on a reverse cycle costs you cold rooms, condensation in the ceiling, and a system working harder than it should for the rest of its life. We install new ducting every time. That cost is in the $14,999.
What “evap removal” actually means.
The removal scope is part of the $14,999. We’ve written out what’s in and what isn’t so there are no surprises on the day.
In the $14,999
What we do for the evap removal
- Disconnect the existing evap unit from power, water and ductwork
- Remove the rooftop unit and dispose of it responsibly
- Cap the roof penetration so it’s watertight or
- Lay matching roof tiles back down where the evap sat, if you supply 12 or more. A roof plumber should still check the work afterwards
- Cap the water supply line back to the wall
- Remove the indoor controller from the wall
- Take old ducting out of the ceiling cavity (where standard access allows)
Not in the $14,999
What we don’t do as part of removal
- Asbestos removal. Pre-1985 homes sometimes have it. We stop work and bring in a licensed asbestos removalist to quote that part
- Resheeting the roof in Colorbond after the evap unit comes off. We offer this as a separate add-on service if you want it, quoted on the day
- Roof plumbing liability. We cap the penetration watertight on the day, but we’re not licensed roof plumbers, so we don’t carry liability for future water ingress through old penetrations. If you want that warranted, get a roof plumber in after us
- Painting or patching the wall where the indoor controller sat or ceiling of the old evap outlets
- Anything outside a standard removal. We tell you on the phone first if we spot it
How this goes once you fill in the form.
1
Free in-home assessment
Someone from CrispAir comes to the house, takes measurements, looks at the existing evap and the roof space, and confirms whether your home fits the $14,999 spec or what the real number is for it. We don’t quote over the phone, because the phone doesn’t tell us what your ceiling cavity will accept.
2
Apply when the design is right
Better Air’s application via Humm90 takes about 10 minutes if you verify income through online bank statements. Decision the same day. If you’d rather know you’re approved before any home visit, we can send you the Humm90 application link first.
3
Installed across two days, on a date that suits you
Most evap-to-RCD changeovers run to two days. Day one is the evap removal and the new ductwork. Day two is the indoor and outdoor units, electrical, controller and zone testing. We sequence it so the worst case is one evening without cooling, and we plan for the cooler part of the week.
Two ways to start, both unhurried.
Want to know the maths works for your household before anyone visits the house? Ask Better Air for a pre-approval via Humm90. Ten minutes online. Once you’re approved, you know the monthly payment you’d be working with before anyone says a word about ductwork or zones.
Already know you can afford it? Skip the maths and book the assessment. Someone from CrispAir will come around, look at the evap and the roof space, and confirm the $14,999 number for your home.
Both are free. Neither commits you to anything.
Primary path
Book the free in-home assessment
CrispAir visits, looks at the evap and the roof space, confirms the $14,999 fixed price or quotes the real number for your home.
Book home assessment
Alt path · private
Pre-approve in 10 minutes
Online application via Humm90. Decision the same day. No home visit until you book one.
Get pre-approved privately
What’s in the $14,999.
✓
16kW Hisense reverse-cycle ducted systemSized for a four-bedroom single-storey Perth home, supplied to us direct as a Hisense Dealer. Cools in summer, heats in winter, dehumidifies on humid days.
✓
Eight independent zones, ten ceiling outletsEach bedroom on its own zone. Living areas on theirs. Multiple outlets in larger rooms mean even airflow without hot or cold spots.
✓
Brand new ducting, properly sized for reverse cycleWe don’t reuse evap ductwork. New insulated runs, proper return-air paths, sized to the system. This is the difference between a quiet, even system and a system that runs hot all summer.
✓
Evap removal, includedOld rooftop unit comes off, gets disposed of properly, roof penetration capped watertight, water supply capped, indoor controller pulled. Full scope written out above.
✓
Touch controller and full zone wiringOne controller on the wall, every zone schedulable, no after-thought extras to add later.
✓
7-year manufacturer warranty, plus 5-year workmanship warrantyHisense covers the system for 7 years on registration. CrispAir’s installation workmanship warranty covers the install itself for another 5 years. The trade default on both is five.
What our customers say.
★★★★★
“We have had our fully ducted system in for just over a year now with no issues whatsoever. We replaced our old Evaporative System which had a habit of dying every Christmas three years running. Since our new Daikin system was installed just before Christmas 2024 we have been enjoying the greatest comfort, even on the hottest days. Today was our first service and the Technican (Matt) was great. He provided some advice on how to better balance the vents, did a thorough job with the service, was prompt and very courteous. Every aspect of our experience with CrispAir, from the initial inquiries through to today’s service and checkup has been first class. Best decision we ever made.”
Steven · Landsdale · Google review
★★★★★
“From the moment I called and dealt with Sam P I knew I was in good hands. Guided me through the options that were available to us to improve what we currently had. The whole interaction was seamless from that first call to the installation. We love our new air conditioners, not only are they stylish but so quiet.”
Ainslie · Claremont · Google review
★★★★★
“Cannot recommend this company enough. From the quote to the installation of my reverse cycle ducted air conditioning, their service was exceptional. Communication and efficiency met all expectations as a customer. The whole installation team was clean, tidy, on time and respectful of the space they were working in. A special mention to Chris the refrigeration engineer for his knowledge and outstanding service and Luke for organising this installation and going above and beyond for me to get this installed quickly in the middle of summer. If I could give more starts I would.”
Emma · Southern River · Google review
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Reverse cycle vs the evap you’ve been putting up with.
It heats in July, not just cools in February
An evap can’t heat. Most evap households end up with separate gas heaters, portable column heaters, or a heat pump in the lounge running through winter. Reverse cycle does both with one system, one controller, one monthly payment.
Works on humid days, when the evap quietly gives up
Evap cools by evaporating water into the air. On a humid Perth afternoon there’s not enough dry air left to evaporate into, and the evap blows warm damp air through the house. Reverse cycle dehumidifies the air it cools, so 38 degrees humid feels like 22 degrees inside, not 30.
Doors stay closed, flies stay out, warmth stays in
Evap needs doors or windows open to vent the moisture out. Reverse cycle is a sealed-house system. In summer you keep the flies out. In winter you keep the warmth in. Most evap owners notice the difference inside a week.
No water bill, no annual breakdown habit
Evap units consume water, fairly chunkily on a hot run, and most of them need new pads, new bearings, or a new controller every few years. Reverse cycle has no water, an inverter compressor that ramps to load, and a 7-year manufacturer warranty against breakdown.
Why CrispAir.
✓
Perth-based since 1986Forty years installing aircon in Perth homes. The estimator who turns up has done your suburb a thousand times, including hundreds of evap-to-RCD changeovers.
✓
Fixed price, written in advancePlenty of operators quote $14,999 on a flyer and find $4,000 of “extras” once they’ve got the deposit. We tell you the real number on the phone, in writing, before anyone visits.
✓
No mess in a home you actually live inWe’re working around your furniture, your routines, and the kids. Drop sheets, boot covers, vacuum at the end of each day. Boxes leave with our van. The ceiling and the roof space are left the way we found them.
✓
Seven years on the unit, five years on the installHisense covers the registered system for 7 years. CrispAir’s workmanship warranty covers the install itself for 5. The trade default for both is five.
The questions evap owners ask.
Is the $14,999 really fixed, or will extras appear during install?
It’s fixed in writing for the spec on this page: a 16kW Hisense reverse-cycle ducted system with 10 outlets across 8 zones, single phase, single storey, non-truss roof, plus removal of the existing evap unit and standard make-good. If your home doesn’t fit that spec, or the removal needs work outside the standard scope, we tell you on the first call before any deposit.
Can you reuse my existing evap ductwork to save money?
No, and anyone who tells you they can is cutting a corner you’ll pay for later. Evap ductwork is sized for low-pressure, high-volume air pushed through wet pads. Reverse-cycle ducting is sized for higher-pressure cooled and dehumidified air, with insulated runs and proper return-air paths. Reusing evap ductwork on a reverse cycle costs you cold rooms, condensation in the ceiling, and a system working harder than it should for the rest of its life. We install new ducting every time.
What if my home isn’t a standard 4-bed single-storey?
Then $14,999 isn’t your number, and we tell you that on the first call rather than after you’ve paid a deposit. Two-storey homes, truss roofs, footprints noticeably bigger or smaller, and homes with tight access all need a separate quote. Same offer (60 months 0% through Better Air), different total.
How does the 0% interest finance work?
It’s Better Air finance, run in partnership with Humm90. Hisense pays the interest in your place. Five years, 60 monthly direct debits of $249.98. The total you pay is the system price. Standard credit check applies. If you want to know you’re approved for finance before we do a site visit, we can send you the Humm90 application link. Ten minutes online and you’ll have your answer.
Will I actually notice the difference compared to evap?
Yes, and most on the same week. Reverse cycle cools properly on humid days, when evap is at its weakest. Doors stay closed, which keeps flies out in summer and warmth in during winter. It heats in July, which evap can’t. The water bill drops by whatever your evap was using. The first 38-degree humid afternoon after install is generally when the realisation lands.
Won’t running reverse cycle blow my power bill?
Modern Hisense reverse cycle is inverter-driven, which means it ramps power use up and down to match the room rather than running flat-out. Zoning means you’re only conditioning the rooms you’re in, not the whole house at once. For most Perth homes the running cost ends up close to what a hard-run evap plus separate heating costs across a year, with the comfort gap going almost entirely the other way. We’re happy to walk through running-cost figures at the assessment.
How long does the install actually take?
Most evap-to-RCD changeovers run to two days. Day one is the evap removal and the new ductwork. Day two is the indoor and outdoor units, electrical, controller and zone testing. We sequence it so the worst case is one evening without cooling, and we plan it for the coolest part of the week.
What if my home has asbestos in the old ducting?
Older Perth homes built before about 1985 sometimes have asbestos in the original ducting or insulation. We don’t touch asbestos ourselves. We spot it on the day, stop work, and get a separately-licensed asbestos removalist to quote that portion. The $14,999 doesn’t cover asbestos work, but we won’t proceed without it being properly handled either.
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