Trane & American Standard’s High-Performance Side-Discharge Heat Pump
Heating and cooling technology has advanced dramatically over the last decade, and homeowners now have better options than ever for efficient, year-round comfort. Among the newest innovations in the HVAC world is the 5HPL5, a side-discharge heat pump jointly released by Trane and American Standard. This model represents a major step forward in performance, cold-weather heating ability, environmental responsibility, and installation flexibility.
Whether you’re considering replacing an aging air conditioner, want to move toward heat-pump technology, or simply want a system that delivers better comfort with lower energy costs, the 5HPL5 deserves your attention. This article breaks down exactly what makes this new model special—and why so many homeowners in the Boise and Treasure Valley area are choosing heat pumps as their next HVAC upgrade.
What Exactly Is a Heat Pump? A Simple Breakdown for Homeowners
Most people understand how an air conditioner works:
it cools your home in the summer by moving heat from inside to outside. That’s it. When winter comes, a furnace takes over.
A heat pump uses the exact same outdoor unit but can run in two directions:
In cooling mode, it works just like an air conditioner.
In heating mode, it reverses and pulls heat from the outdoor air—even when it’s very cold—to heat your home.
Modern heat pumps are incredibly efficient, and thanks to advanced refrigerants and improved compressor technology, they can extract usable heat from outdoor temperatures well below freezing.
This dual-function design is why heat pumps have exploded in popularity. With one outdoor system doing the work of both an AC and a heater, you gain:
- Year-round efficiency
- Lower utility bills
- Fewer mechanical components
- Quieter, smoother operation
For Treasure Valley homeowners, who experience both hot summers and cold—but not extreme—winters, a heat pump is often the ideal solution.
Why Heat Pumps Offer Better Long-Term Savings
In the Boise climate, the typical air conditioner only runs for about 2 to 3 months each year. That means even if you upgrade to a high-efficiency AC, you only reap savings during the summer season.
But a heat pump?
You get savings in both the cooling AND heating season.
Since a heat pump often runs for 4 to 6 months total (depending on weather patterns), the return on investment is significantly better. Let’s compare:
Typical AC Upgrade Savings Example
- $100/month savings
- 3 months of use
- $300 total seasonal savings
Heat Pump Upgrade Savings Example
- $100/month savings
- 6 months of use (summer + late fall + early spring)
- $600 total seasonal savings
That’s double the return, simply because the system provides efficient heating as well.
Additionally:
- Heat pumps run longer, steadier cycles—reducing energy spikes
- They maintain more stable temperatures
- They significantly reduce the need for backup furnace heat
In a region like the Treasure Valley where electric power is relatively affordable and winters are increasingly mild, a high-efficiency heat pump can outperform gas heating in overall cost.
A Space-Saving, Modern Design: The Side-Discharge Advantage
One of the most noticeable upgrades of the 5HPL5 is its side-discharge airflow design.
Traditional systems blow air vertically out the top. This requires:
- More clearance above the unit
- No overhead obstructions
- A wider footprint
Side-discharge units, like the 5HPL5, discharge air horizontally. This creates several major advantages:
1. Better Installation Flexibility
The 5HPL5 can fit into tighter spaces:
- Narrow side yards
- Under decks
- Between patios and fences
- Small backyard footprints
Homes with limited exterior real estate—townhomes, zero-lot-line properties, modern subdivisions—benefit greatly.
2. Quieter Operation
By pushing air sideways instead of upward:
- Noise is directed away from windows
- Vibration is reduced
- The compressor runs smoother
This makes it a great option for bedrooms facing the outdoor unit.
3. Cleaner, Sleeker Appearance
Side-discharge units typically have:
- Lower profiles
- Smaller footprints
- A contemporary look
The 5HPL5 blends more discreetly into landscaping and modern home designs.
Outstanding Cold-Weather Performance: A True Upgrade Over Previous Models
When choosing a heat pump, low-temperature heating capacity is one of the most important metrics. It determines how much heat the system can produce when the outside temperature drops.
Here’s how several Trane/AS models perform at 5°F:
Model
% of Rated Capacity @ 5°F
XR14
~51%
XR15
~52%
XV20
~71%
5HPL5
~78%
This is a substantial improvement, and one of the strongest features of the new 5HPL5.
Why this matters in Boise & the Treasure Valley
Our winters are cold, but not frigid. Most days fall between 20°F and 45°F. A heat pump with strong low-temp capacity can:
- Heat your home comfortably without relying on backup strips
- Run more efficiently
- Reduce your overall winter energy bill
- Keep temperatures stable even during cold snaps
The jump from 71% (XV20) to 78% (5HPL5) is significant—it means the system maintains more heating strength in colder temperatures and keeps your home warmer with less supplemental heat.
Greener Technology with R-454B Refrigerant
Another major upgrade with the 5HPL5 is the use of R-454B, a next-generation, low-GWP refrigerant.
Older systems used R-410A, which is now being phased out because of its high global warming potential.
Benefits of R-454B
- Lower environmental impact
- Better efficiency performance in low temps
- Future-proof compliance with regulations
- Better long-term support and availability
With refrigerant changes happening nationwide in 2025 and beyond, choosing a system that already uses R-454B ensures homeowners won’t get stuck with obsolete technology.
Two-Stage Operation = Better Comfort, Better Efficiency
The 5HPL5 is a two-stage heat pump, and that is a major improvement over traditional single-stage systems.
Single-Stage Systems Run Like This:
0% (off)
100% (on)
They operate at full blast even when your home only needs a little cooling or heating.
Two-Stage Systems Can Run at:
Low Stage: efficient, quiet, steady
High Stage: full output in extreme conditions
This allows the system to match the home’s needs much more accurately.
Benefits You Feel Every Day
- More consistent indoor temperatures
- Less cycling on/off
- Lower operational noise
- Less energy waste
- Longer equipment life
With the moderate temperature swings we experience in the Treasure Valley, a two-stage system operates in low stage most of the time—saving energy and improving comfort.
Who Should Consider the 5HPL5?
This unit is ideal for homeowners who want:
- A future-proof refrigerant
- Strong low-temperature heating
- A compact outdoor footprint
- Lower energy bills year-round
- A quieter, smoother-running system
- A high-performance heat pump at a more budget-friendly price than top-tier modulating units
If your existing AC or heat pump is 12–20 years old, this is an especially smart upgrade.
Final Takeaway: Why the 5HPL5 Is One of the Best New Heat Pumps Available
The Trane and American Standard 5HPL5 combines multiple next-generation features:
- 78% heating capacity at 5°F
- R-454B low-GWP refrigerant
- Side-discharge design
- Two-stage efficiency
- Improved installation flexibility
- Year-round savings
For homeowners in Boise and the Treasure Valley who want reliability, performance, and long-term value, the 5HPL5 stands out as one of the best heat pump options available today. Contact Gem Heating & Air Conditioning of Boise, Idaho to learn more!
