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TITLE 24 AND HERS COMPLIANCE FOR BUILDERS

QuietCool is offered as a standard product in many new home communities by the nation’s largest home builders. QuietCool has proven home after home to be the single most effective energy-efficient product a builder can install to meet compliance and at the lowest cost available on the market today. Simply put, installing whole house fans are becoming required to stay competitive in the ever-changing new home marketplace.

As the industry leader in cooling ventilation, QC Manufacturing is proud to be continually improving the following services to assist our new construction developers:

  • Industry-leading products for cost and Title 24 efficiency
  • Title 24 consultations and value engineering services
  • Simple form factor and ease of installation
  • American made steel products with unmatched durability and performance
  • 15-year product warranty on Pro Series
  • Contact us using the form below, to see the massive difference we can make on your next project’s budget!


Below is a set of specification tables for CA new construction, for industry professionals such as Builders, Title 24 modeling firms, Engineering firms, and city officials, which contain all the important specifications needed for new construction regarding the QuietCool Trident Pro, and Stealth Pro family of products.

We are including the information from legacy products which are included in the specifications of many current construction projects and legally certified for CA Title 24 part 6 purposes.

As QuietCool explodes across the country, we continue to seek wholesale distribution partners who desire to add to their product lineup.

If you are interested in becoming a QuietCool wholesaler, please fill out the brief form below. Once submitted, a QuietCool representative will contact you shortly.

2019 PRODUCT SPECIFICATIONS FOR HERS COMPLIANCE

2020 QuietCool – Whole House Fan Modeling Specifications v.2019.3
All values shown will meet HERS protocol RA3.9.4.1.2 WHF Airflow Rate Measurement Using Powered Flow Capture Hood.
Builders MUST specify this protocol to be used during HERS verification, as other methods will result in HERS failure.
Specifications below are NOT to be used for vertical / kneewall mount applications.
Recommended Home Size (Sq.Ft.) 2019 Code QuietCool WHF Specs - For Specified Fan + HERS Option
2 CFM/sqft. Product Info HERS CFM Watts Watt/CFM *HERS Venting
1369 STL Pro 4.8X 2737 490 0.179 4.17
1603 STL Pro 5.5X 3206 529 0.1650 5.00
1958 STL Pro 6.0X 3916 597 0.1525 5.37
1701 STL Pro 3.3X + 3.3X 3402 620 0.1822 6.26
2525 STL Pro 6.0X + 2.5X 5050 793 0.1570 5.37 + 2.56
2809 STL Pro 6.0X + 3.3X 5617 907 0.1615 5.37 + 3.13
3327 STL Pro 6.0X + 4.8X 6653 1087 0.1634 5.37 + 4.17
3561 STL Pro 6.0X + 5.5X 7122 1126 0.1581 5.37 + 5.00
3916 STL Pro 6.0X + 6.0X 7832 1194 0.1525 5.37 + 5.37
* Installed venting MUST be the values listed above, installed in the attic space where fan(s) are installed in order to pass HERS. Do NOT compute 1/750 of CFM listed above, as code required NFVA is computed from HVI-916 values.
** NOTE: Alternatives to STL6.5X Fans: Qty Two 3.3x Fans is equal in price. STL 6.0X + 3.3X are equal in compliance, but additional cost.

Homes With Tall Large Attics

Recommended Home Size (Sq.Ft.) Note: These combinations require 60 in. of vertical clearance where fan is to be installed.
2 CFM/sqft. Product Info HERS CFM Watts Watt/CFM *HERS Venting
2481 STL Pro 7.0X 4962 773 0.1558 6.93
3048 STL Pro 7.0X + 2.5X 6096 969 0.1590 6.93 + 2.56
3332 STL Pro 7.0X + 3.3X 6663 1083 0.1625 6.93 + 3.13
3850 STL Pro 7.0X + 4.8X 7699 1263 0.1640 6.93 + 4.17
4084 STL Pro 7.0X + 5.5X 8168 1302 0.1594 6.93 + 5.00
4439 STL Pro 7.0X + 6.0X 8878 1370 0.1543 6.93 + 5.37
4962 STL Pro 7.0X + 7.0X 9924 1546 0.1615 6.93 + 6.93
* Installed venting MUST be the values listed above, installed in the attic space where fan(s) are installed in order to pass HERS. Do NOT compute 1/750 of CFM listed above, as code required NFVA is computed from HVI-916 values.

Homes with Sealed, High Performance Attics

Roof Mount WHF Options *** Note: These combinations are for sealed attics with no ventilation.
Products HERS CFM Watts watt/CFM Venting Home Size @ 1.5 cfm/sqft
RM-WHF-4.0-DB 2204 415 0.19 N/A 1469
RM-WHF-4.0-DB (Quantity 2) 4408 830 0.19 N/A 2939
RM-WHF-4.0-DB (Quantity 3) 6612 1245 0.19 N/A 4408
*** Roofing contractor is required for installation in new construction homes requiring RM-WHF product line
For questions regarding Title 24, Part 6 compliance modeling, and HERS verifications, please contact:
Rick Fayad at Email: [email protected] or via Phone: 209-614-3935
Andy Llora at Email: [email protected] or via Phone: 209-324-9482

2018 PRODUCTS

MODEL CFM WATT WATT/CFM REQ. VENT (SQFT)
TRI PRO-1.5X 1110 115 0.1 1.5
TRI PRO-2.5X 1800 244 0.14 2.4
TRI PRO-3.3X 2450 323 0.13 3.3
TRI PRO-4.8X 3260 555 0.17 4.3
TRI PRO-5.5X 3940 632 0.16 5.3
TRI PRO-6.0X 4150 777 0.19 5.5
TRI PRO-7.0X 5300 1147 0.22 7.1
STL PRO-1.5X 1040 66.7 0.06 1.4
STL PRO-2.5X 1920 157 0.08 2.6
STL PRO-3.3X 2350 264 0.11 3.1
STL PRO-4.8X 3130 408 0.13 4.2
STL PRO-5.5X 3750 490 0.13 5
STL PRO-6.0X 4030 462 0.11 5.4
STL PRO-7.0X 5200 725 0.14 6.9

2017 PRODUCTS

MODEL CFM WATT WATT/CFM REQ. VENT (SQFT)
TRI PRO-1.5 1171 110 0.09 1.6
TRI PRO-2.5 1991 254 0.13 2.7
TRI PRO-3.3 2809 318 0.11 3.7
TRI PRO-4.8 3750 673 0.18 5
TRI PRO-5.5 4461 778 0.17 5.9
TRI PRO-6.5 5398 855 0.16 7.2
STL PRO-1.5 1191 69 0.06 1.6
STL PRO-2.5 2091 130 0.06 2.8
STL PRO-3.3 2899 264 0.09 3.9
STL PRO-4.8 3881 556 0.14 5.2
STL PRO-5.5 4487 724 0.16 6
STL PRO-6.5 5660 569 0.1 7.5

2020 HERS SAFE NUMBERS

Stealth Pro X, Trident Pro X, RM WHF-4.0-DB

If you are a new home builder, or are an integral part of the new home industry and would like to schedule an informative presentation about the QuietCool Pro family of products, please complete the form below.




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