Selecting the best cooling system for your house can be quite a challenge, particularly when you reside in an old building with no ductwork installed. Conventional central air conditioning entails large and bulky ducts that can be very intrusive and costly. An alternative to such a cooling system is the SpacePak small-duct, high-velocity (SDHV).
This analysis focuses on the comparison of the SpacePak system to the traditional central air, examining the advantages and disadvantages and installation requirements of both options.
What is a SpacePak System?
The SpacePak was the first company to introduce the concept of SDHV HVAC systems. Unlike the conventional systems where large metal ducts are required, the SDHV entails flexible tubes usually measuring 2 inches in diameter. These tubes can be installed into wall cavities, floors, and ceilings with ease and minimal interference. The system operates under higher velocities compared to conventional systems to create an “aspiration” effect that mixes room air.
This design makes SpacePak ideal for:
- Older and heritage homes lacking existing ductwork
- Condos and townhouses where space is limited
- Custom builds where preserving aesthetics is a priority
SpacePak vs. Central Air: A Detailed Comparison
To help you decide, here is a breakdown of the key differences between a SpacePak system and a conventional central air conditioner.
| Feature | SpacePak System | Conventional Central Air |
|---|---|---|
| Ductwork Required | Small, flexible 2-inch tubing | Large, bulky ducts (8-12 inches) |
| Best For | Homes without ducts, retrofits, heritage properties | Newer homes with existing ductwork |
| Installation Disruption | Minimal; tubing fits in walls/ceilings | High; may require tearing down walls or adding bulkheads |
| Cooling Performance | Even cooling; eliminates hot/cold spots | Standard; potential for uneven airflow |
| Humidity Removal | Removes 30%+ more humidity | Standard humidity removal |
| Noise Level | Very quiet when properly installed | Moderate airflow and operation noise |
| Aesthetic Impact | Vents are 5″ round; discreet and can be placed anywhere | Large registers and bulky vents |
| Upfront Cost | Higher mid-to-high range ($8,000-$25,000+) | Lower to mid-range (varies by home) |
| Lifespan | 15-25 years with proper care | 12-20 years with regular maintenance |
Pros and Cons of SpacePak
Pros of SpacePak
- Retrofit-Friendly: Does not require extensive renovation works, making it an excellent choice for retrofitting central air conditioning systems into older houses.
- Superior Dehumidification: Dehumidifies the air much better than traditional systems do, enabling a person to feel comfortable at higher temperatures.
- Even Cooling: Eliminates hot or cold spots thanks to high-velocity air currents.
- Quiet Operation: Operates almost silently when installed and configured properly.
- Space-Saving Design: Compact design and small ducts allow one to save living space.
Cons of SpacePak
- Higher Upfront Cost: High-end equipment and special installation require additional expenses compared to ordinary air conditioning systems.
- Installation Complexity: Necessitates a qualified specialist trained in working with SDHV systems, and the installation process itself may uncover hidden difficulties in older houses
- Potential Noise Issues: High-velocity air currents can be quite noisy if designed incorrectly.
- Not a DIY Project: Load calculation and precise planning of ductwork are very important factors.
SpacePak Unit Installation: What to Expect
A proper SpacePak installation is crucial for optimal performance and longevity. Here is an overview of the process:
- Site Assessment and Load Calculation: A certified installer will evaluate your home’s layout, insulation, and cooling needs to determine the right system size and number of outlets.
- Equipment Selection: Choose the appropriate indoor air handler and outdoor condensing unit based on your home’s square footage and requirements.
- Duct Routing: The installer will map out the best paths for the flexible 2-inch tubing through your walls, floors, and attic or crawlspace to reach each room.
- Air Handler Installation: The compact air handler is placed in a discreet location, such as a closet, basement, or attic.
- Terminator (Vent) Placement: Small 5-inch round outlets are installed in ceilings, floors, or walls, ideally in locations that avoid blowing directly on occupants and ensure good air circulation.
- Connecting Components: The installer connects the indoor unit to the outdoor condenser and, if applicable, a hydronic coil for heating, following all local codes.
- System Startup and Testing: The system is charged, tested for performance, and calibrated to ensure quiet, efficient operation.
Key Installation Considerations from Experts
- Proper Outlet Sizing: Using enough outlets per room is critical to keep air velocity and noise levels low.
- Duct Length: Supply runs need a minimum length to reduce turbulence and noise. Short runs can create a “jet engine” sound.
- Avoid Tight Bends: Sharp bends in the ductwork, especially near outlets, can increase noise.
- Sound Attenuators: These are essential for reducing the “whoosh” sound of high-velocity air.
- Zone Control: For larger homes, the system can be zoned to provide independent cooling to different areas.
A complete house conversion of the SpacePak system would cost between $8,000 and $25,000, depending on the zones, house size, and complexity of the installation. The cost for a smaller house conversion or for a single room in an apartment complex could be between $3,500 and $8,500.
Frequently Asked Questions (FAQ)
Q: Is SpacePak more energy-efficient than central air?
A: It could be. Thanks to its ability to dehumidify better, you could set your thermostat higher and still remain comfortable – which would reduce energy consumption. However, system efficiency relies on proper sizing and installation.
Q: Can SpacePak be used for both heating and cooling?
A: Yes. SpacePak is first of all an air conditioner, but it could be used with hydronic coil (which uses heated water from a boiler) or electric heating strip to heat your house.
Q: How loud is a SpacePak system?
A: Provided that your system was designed and installed properly, it would be extremely quiet. In most cases, people describe the sound it makes as just a “whooshing” of air and it is quieter than conventional forced air system. The noise problem occurs because of improper installation only.
Q: How long does a SpacePak installation take?
A: As opposed to conventional ductwork installation that takes weeks, SpacePak installation should be done in several days because of its less-invasive installation process.
Q: Can I install a SpacePak system myself?
A: No. The process requires expertise in terms of knowledge, skills and certification. Otherwise you may experience poor functioning, loud noise and additional repairs expenses.
Q: Is SpacePak a good choice for a new home?
A: Yes. Being integrated into the construction, SpacePak allows having a neat interior design without visible vents and equipment rooms.
Q: What’s the difference between SpacePak and a mini-split system?
A: SpacePak ensures discreet installation of whole home central air conditioning system through small vents in every room, whereas mini-splits are ductless systems that usually need visible wall-mounted units in every zone. SpacePak is preferable for heritage homes, where aesthetics are important.
Q: What maintenance does a SpacePak system require?
A: Once a year it should undergo professional maintenance involving such things as examining the air handler, filters, duct connections, as well as making sure that the condensate drain is not clogged.
Conclusion
Those who own older houses or desire a subtle, yet highly efficient, alternative system should opt for SpacePak, which offers great cooling, exceptional humidity control, and nearly invisible installation. But one must be aware of the fact that it is necessary to balance out the higher costs of installation and choose an expert installer to guarantee that your system will run silently and efficiently.
