RLB: the eldest of Fujitsu’s R-410A wall units, down to -15 °C.
Its technical guides date from December 2014. At 18,000 and 24,000 BTU/h, rated down to -15 °C, the RLB was replaced by the LPAS1, then R-32 took over with the Altair 500. At -15 °C, the 24,000 still delivers 20,800 BTU/h per Fujitsu’s table.
RLB · R-410A
Fujitsu names the LPAS1 as the RLB’s replacement; on R-32, the Altair 500 keeps the same sizes and the same floor.
The eldest, in five facts.
Facts from Fujitsu sheets, the ENERGY STAR list and the NEEP list. Sources are at the bottom of the page.
Its design manuals date from December 2014, the oldest design in the family.
Fujitsu names the LPAS1 as the RLB’s replacement.
Same name, two answers: Fujitsu listed ENERGY STAR ’yes’ for the 18,000 and ’no’ for the 24,000.
In cooling, it modulates down to 3,100 BTU/h.
At -15 °C, the 24,000 still delivers 20,800 BTU/h, according to Fujitsu’s table.
Eight R-410A series, from the coldest floor to the mildest.
Before R-32, Fujitsu wall units ran on R-410A. Each card gives the series’ heating floor; the RLB is highlighted.
Three generations, the same spot in the house.
The RLB, its replacement named by Fujitsu, then the R-32 model that keeps its sizes and floor.
Technical guides from December 2014, submittal sheets 2019. Rated down to -15 °C. Not ENERGY STAR listed: $0.
Replacement named by Fujitsu (AOU18RLB → AOUH18LPAS1). On the market in 2021 per ENERGY STAR. $0 LogisVert.
Same sizes and the same -15 °C floor. Cold climate from the 18,000: $1,356 and $1,776 in LogisVert. Mapping made by AirGreen.
18,000 or 24,000 BTU/h.
Tap a size: photo, link to the product sheet, heat at -15 °C when Fujitsu publishes it, efficiency and LogisVert amount.
| Model | Heats down to | Max at -15 °C | SEER2 | HSPF2 | LogisVert | AHRI |
|---|---|---|---|---|---|---|
| RLB 18,000 BTU/h | -15 °C | – | – | – | $0 | – |
| RLB 24,000 BTU/h | -15 °C | – | – | – | $0 | – |
The indoor unit, to scale
Front face drawn to scale, with the 1 m ruler. Dimensions: width × height × depth, according to Fujitsu.
Down to -15 °C.
For the RLB, Fujitsu publishes the heat at 8 °C and one table point at -15 °C. No red tick: the RLB is not on the ENERGY STAR list.
| Size | 8.3 °C | -15 °C |
|---|---|---|
| 18,000 BTU/h | 20,000 BTU/h | 15,400 BTU/h |
| 24,000 BTU/h | 27,000 BTU/h | 20,800 BTU/h |
Operating ranges
Outdoor operating temperatures published by Fujitsu.
What Fujitsu put in it.
Fujitsu lists this series among its retired models. It stays in AirGreen’s catalogue: we confirm availability at quote time, and show you its R-32 successor alongside.
Optional Wi-Fi: a wireless adapter, sold separately, adds app control.
Minimum heat mode: the room stays at 10 °C while you’re away.
Powerful mode: 20 minutes at maximum airflow and compressor speed.
Economy mode: the set point adjusts to avoid over-heating or over-cooling.
Cold prevention: the coil warms up before the fan starts in heating.
Fujitsu’s design manual describes four filters: an antibacterial pre-filter, an ion deodorizing filter, an apple-catechin filter and a long-life ion filter.
What Fujitsu describes, and what we check.
To check: Fujitsu describes four filter types for the RLB. Depending on the sheet and the year, not all are supplied: we check what is in the unit at service time.
26 and 31 dB(A) on quiet speed.
Place each size on the scale of everyday sounds.
| Model | Indoor, quiet speed | Indoor, high speed | Outdoor unit |
|---|---|---|---|
| RLB 18,000 BTU/h | 26 dB(A) | 42 dB(A) | 50 dB(A) |
| RLB 24,000 BTU/h | 31 dB(A) | 47 dB(A) | 50 dB(A) |
Levels published by Fujitsu, measured in a lab; at home, the room, the furniture and the distance change what you hear. Scale: Government of Québec reference points.
Up to 20 m of line set and 15 m of height difference.
Drag the sliders to place the outdoor unit: the tool applies Fujitsu’s limits and the refrigerant to add beyond the pre-charge.
| Model | Max length | Max height | Pre-charge | Minimum |
|---|---|---|---|---|
| RLB 18,000 BTU/h | 20 m | 15 m | 15 m | 3 m |
| RLB 24,000 BTU/h | 20 m | 15 m | 15 m | 3 m |
$0 for the RLB, up to $1,776 for its successor.
No RLB is on the ENERGY STAR list today: LogisVert pays nothing. Fujitsu’s sheet did say “yes” for the 18,000: the list decides.
| Model | Indicative amount | Calculation |
|---|---|---|
| RLB 18,000 BTU/h | $0 | – |
| RLB 24,000 BTU/h | $0 | – |
Since November 26, 2025, only ENERGY STAR certified heat pumps qualify.
The outdoor unit must be at least 12,000 BTU/h nominal in cooling.
The grant never exceeds the purchase and installation cost, before taxes.
You apply no later than nine months after installation.
July 8, 2027
LogisVert residential participation guide, version 1.10 of September 15, 2026. Indicative amounts, calculated with the ENERGY STAR value at -8 °C (17 °F); only Hydro-Québec confirms the grant, with the AHRI number.
What replaces the RLB today.
Pick a size: the RLB on the left, the R-32 model that replaces it on the right, with the figures from Fujitsu, ENERGY STAR and LogisVert. The better value on each row is in green.
RLB · 18,000 vs Altair 500 · 18,000
| RLB · 18,000 | Altair 500 · 18,000 | |
|---|---|---|
| Heats down to | -15 °C | -15 °C |
| Max heat at -15 °C | – | 18,500 BTU/h |
| SEER2 | – | 22 |
| HSPF2 | – | 10.5 |
| Lowest indoor sound | 26 dB(A) | 26 dB(A) |
| Indoor weight | 14 kg | 12.5 kg |
| Max line set | 20 m | 30 m |
| Indicative LogisVert | $0 | $1,356 |
Same size and the same -15 °C floor; Cold Climate certified, so it qualifies for LogisVert.
RLB · 24,000 vs Altair 500 · 24,000
| RLB · 24,000 | Altair 500 · 24,000 | |
|---|---|---|
| Heats down to | -15 °C | -15 °C |
| Max heat at -15 °C | – | 20,000 BTU/h |
| SEER2 | – | 21.5 |
| HSPF2 | – | 10 |
| Lowest indoor sound | 31 dB(A) | 31 dB(A) |
| Indoor weight | 14 kg | 12.5 kg |
| Max line set | 20 m | 30 m |
| Indicative LogisVert | $0 | $1,776 |
Same size and the same -15 °C floor; Cold Climate certified, so it qualifies for LogisVert.
R-410A: what the rules really say.
In Canada, what is capped is the total amount of HFCs, not the servicing of your heat pump. US dates are shown for comparison, in grey.
Canada ratifies the Kigali Amendment, which targets an 85% cut in HFCs by 2036.
Canada’s HFC phase-down starts: the cap is 90% of the baseline.
Québec: GWP limits for some refrigeration equipment. Heat pumps are not covered.
Canada’s cap drops to 60% of the baseline, a 40% cut.
A GWP limit of 750 for chillers, in Canada and in Québec. Still nothing for residential heat pumps.
United States only: import deadline for residential R-410A products (EPA rule, per Fujitsu).
LogisVert requires ENERGY STAR certification, whatever the refrigerant.
United States only: installation deadline for new residential R-410A systems (per Fujitsu).
Canada’s cap drops to 30% of the baseline.
Canada’s cap drops to 20% of the baseline.
Canada’s cap reaches 15% of the baseline, the targeted 85% cut.
Key point: In Canada, what is capped is the total amount of HFCs, not the installation or servicing of an R-410A heat pump. The US dates are shown for comparison only.
Servicing an R-410A heat pump in Québec
In Québec, you can have your R-410A heat pump serviced and repaired for its whole useful life.
Québec’s halocarbon regulation limits the GWP of refrigeration equipment and chillers, not that of residential heat pumps.
Only a person holding the attestation required by the regulation may install, service, repair, charge or drain the unit.
Refrigerant must never be released into the air. It is recovered before any repair or removal.
A leaking unit isn’t simply topped up. A leak test comes before any refill.
The regulation’s annual leak test targets air-conditioning equipment of 20 kW and more, a size no wall heat pump in these families reaches.
R-32 can’t go into an R-410A system. Fujitsu says it is not a drop-in replacement.
Indoor and outdoor units pair within the same generation. Plan a full-system replacement when the time comes.
Canada doesn’t ban R-410A. It caps the amount of HFCs: 60% of the baseline until 2028, then 30% from 2029.
Fujitsu warranty: 5 years parts and 7 years compressor, up to 12 years with online registration within 60 days and a Fujitsu Elite contractor. Labour isn’t covered by Fujitsu.
Register the unit online within 60 days of installation. That’s the condition for the extended warranty.
Every size, line by line.
| RLB 18,000 BTU/h | RLB 24,000 BTU/h | |
|---|---|---|
| Indoor unit | ASU18RLB | ASU24RLB |
| Outdoor unit | AOU18RLB | AOU24RLB |
| AHRI number | 7937663 | 7940753 |
| Heats down to | -15 °C | -15 °C |
| Rated heating | 18,000 BTU/h | 24,000 BTU/h |
| Rated cooling | 18,000 BTU/h | 24,000 BTU/h |
| SEER2 | – | – |
| EER2 | – | – |
| HSPF2 | – | – |
| Indoor sound (min / max) | 26 / 42 dB(A) | 31 / 47 dB(A) |
| Outdoor sound | 50 dB(A) | 50 dB(A) |
| Indoor, w×h×d | 998×320×228 mm | 998×320×228 mm |
| Outdoor, w×h×d | 790×620×290 mm | 790×620×290 mm |
| Weight in / out | 14 / 39 kg | 14 / 39 kg |
| Max line set / height | 20 / 15 m | 20 / 15 m |
| Breaker | – | – |
| Refrigerant charge | – | – |
| ENERGY STAR | Not ENERGY STAR listed | Not ENERGY STAR listed |
| Indicative LogisVert | $0 | $0 |
Data from Fujitsu submittal sheets and manuals, the ENERGY STAR list and the NEEP list, read October 8, 2026. Dimensions in millimetres: width × height × depth.
What the RLB sheets tell.
The RLB’s design manuals date from December 2014. It is the oldest of the Fujitsu R-410A wall units AirGreen offers.
Source: FujitsuFujitsu names the LPAS1 as the RLB’s replacement.
Source: FujitsuIn cooling, it modulates down to 3,100 BTU/h.
Source: FujitsuAt -15 °C, the 24,000 still delivers 20,800 BTU/h, according to Fujitsu’s table.
Source: FujitsuSame name, two answers: Fujitsu listed ENERGY STAR ’yes’ for the 18,000 and ’no’ for the 24,000.
Source: FujitsuThe 18,000 indoor unit is rated 26 dB(A) at quiet speed, below a low-voice conversation (30 dBA).
Source: Fujitsu, Government of QuébecUp to 12 years on parts and compressor.
The longest tier needs online registration within 60 days and a Fujitsu Elite contractor. At AirGreen, both are done for you.
Fujitsu limited warranty statement for R-410A (version 10/2024): labour is not covered by Fujitsu, and the 10-year tier covers systems bought after January 1, 2022.
We register your unit with Fujitsu, free, on time.
The condition for the 12-year tier. AirGreen is Elite Plus.
The warranty requires a licensed contractor. RBQ 5645-9605-01.
Fujitsu’s text excludes systems bought from an online retailer.
Fujitsu’s durability, AirGreen’s servicing.
An RLB can be serviced and repaired in Québec for its whole useful life. When it is time to replace it, AirGreen shows you the Altair 500 alongside.
What FUJITSU AIRSTAGE brings
- Since 2014The oldest design in the family.
- Down to -15 °CFloor published by Fujitsu.
- Four filtersDescribed by Fujitsu.
- Up to 12 yearsParts and compressor, on Fujitsu’s conditions.
What AirGreen brings
- Elite Plus dealerThe highest level of the AIRSTAGE Elite program.
- Free home estimateWe measure and check the insulation and the location.
- Warranty registered for youWith Fujitsu, within 60 days.
- RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16.
The result: a well-serviced RLB, or one replaced at the right time by the right Altair 500.
Elite Plus: the highest level of the AIRSTAGE Elite program.
Fujitsu’s Japanese engineering, installed by an Elite Plus team across Montreal, Laval, Longueuil, the North Shore, the South Shore and Montérégie.
The highest level of the AIRSTAGE Elite program.
Our technicians take the manufacturer’s training on AIRSTAGE systems.
Vacuum, refrigerant settings, electrical hookup, set up for winter.
Manufacturer parts and Fujitsu technical support, wherever we install.
Free. We measure and check the insulation and the location.
The model, the size and the indicative LogisVert amount, in writing.
Vacuum, refrigerant, electrical, winter settings.
We register the unit with Fujitsu and help you with LogisVert.
What people ask us about the RLB.
No question matches. Call us at 514 316-2973.
Fujitsu rates it to -15 °C.
No. Neither size is on the ENERGY STAR list, which has been mandatory since November 26, 2025.
No. Fujitsu marks it ’Retired’ and names the LPAS1 as its replacement, which is itself retired now.
The R-32 Altair 500, in 18,000 or 24,000: the same -15 °C floor, and Cold Climate certified.
Yes, with an optional Fujitsu or Intesis Wi-Fi module.
Up to 20 m and 15 m of height difference; it’s pre-charged for 15 m.
Fujitsu’s design manual describes four filters, including an apple-catechin filter and an ion deodorizing filter.
The 18,000 indoor unit is rated 26 dB(A) at quiet speed in the lab; the 24,000, 31 dB(A).
The RL2 is a 115 V model in 9,000 and 12,000 BTU/h, rated to -10 °C. The RLB is a 208/230 V model in 18,000 and 24,000, rated to -15 °C.
Yes. Servicing and repairing an R-410A unit is still allowed in Québec, by a qualified refrigeration technician.
Related collections.
A RLB, or its successor, installed by an Elite Plus team.
We come and see the room, show you the RLB and its R-32 successor side by side, with their LogisVert amounts, and give you a clear quote.
Hydro-Québec does not solicit anyone by phone or door to door for LogisVert. A call “from Hydro-Québec” selling a heat pump: hang up.
Sources checked on October 8, 2026
47 sources · show
- Fujitsu AIRSTAGE, airstagehvac.com/v1/products?productIds=<model>
- Fujitsu, product or archive page IDX
- Fujitsu AIRSTAGE, airstagehvac.com/split/wall
- Fujitsu AIRSTAGE, document pdf-fcus-halcyon-warranty-202410
- Fujitsu AIRSTAGE, airstagehvac.com/halcyon/warranty
- Fujitsu AIRSTAGE, document pdf-fcus-h-series-warranty-r32-202606
- Fujitsu AIRSTAGE, airstagehvac.com/benefits/next-gen-r32
- Fujitsu AIRSTAGE, document pdf-fcus-media-library-pr-lz-lm-nr-01
- Fujitsu, technical document AOU18RLB_Submittal_05-07-2021
- Fujitsu, technical document AOU24RLB_Submittal_05-07-2021
- Fujitsu, technical document AOU_RLB_Design%20%26%20Technical%20Manual_05-07-2021
- Fujitsu, product or archive page SER-ENTRY
- Fujitsu, technical document 09LPAS1_Submittal_09LPAS1
- Fujitsu, technical document 12LPAS1_Submittal_12LPAS1
- Fujitsu, technical document 18LPAS1_Submittal_18LPAS1
- Fujitsu, technical document 24LPAS1_Submittal_24LPAS1
- Fujitsu, technical document 30LPAS1_Submittal_30LPAS1
- Fujitsu, technical document 36LPAS1_Submittal_36LPAS1
- Fujitsu, design manual AS136EF_03
- Fujitsu, design manual AS137EF_02
- Fujitsu, design manual AS144EF_03
- Fujitsu AIRSTAGE, airstagehvac.com/r32/kpas1
- Fujitsu, brochure FG8151C
- Fujitsu, brochure FG8151D
- Fujitsu, submittal sheet 09KPAS1
- Fujitsu, submittal sheet 12KPAS1
- Fujitsu, submittal sheet 18KPAS1
- Fujitsu, submittal sheet 24KPAS1
- Fujitsu, submittal sheet 30KPAS1
- Fujitsu, submittal sheet 36KPAS1
- Fujitsu, design manual AS237ES_02
- Fujitsu AIRSTAGE, airstagehvac.com/split/featureicon
- ENERGY STAR, certified air-source heat pump list (dataset w7cv-9xjt)
- NEEP, cold-climate heat pump list
- Hydro-Québec, LogisVert residential participation guide, version 1.10
- Hydro-Québec, LogisVert partner notice (ENERGY STAR required)
- Government of Québec, mesure du bruit
- Government of Québec, Q 2,%20r.%2029
- Government of Québec, faq en
- Government of Canada, closed canada greener homes grant quebec
- Government of Canada, FullText
- Government of Canada, depleting substances halocarbon alternatives regulations
- Government of Canada, ozone regulations amendments questions
- International Astronomical Union, star and constellation names
- NASA, summer triangle corner altair
- airgreen.ca product sheets, read October 8, 2026
- AirGreen, “Nos réalisations” projects blog
Amounts shown are estimates; only Hydro-Québec confirms the grant. Manufacturer data is quoted “according to Fujitsu”.
The RLB units, right below.
For R-32, see the Altair 500: same sizes, same floor, and cold-climate LogisVert.
