Overview
ERV
Retrofit
Performance Data
Guide Specifications
Unit Drawings
Installation & Operation
Maintenance & Troubleshooting
ComfortZone
Overview
Overview
CGC did not invent the Vertical Stacked Heat Pump — we just perfected it.
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100% Completely removable chassis
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Very low sound levels
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Multiple supply & return air knock outs (left ,right, rear)
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Small footprint increases floor space
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Drywall mounts directly on cabinet
ERV
Integral ERV Brochure
Retrofit
Retrofit Leaflet
Performance Data
AHRI Data
AHRI IKV HKV – HYBRID – January 2026
Standard Performance Data
Please contact factory for details.
Guide Specifications
Guide Specifications
IKV HKV GS .PDF – January 2026
IKV HKV GS .DOC – January 2026
Unit Drawings
Standard Unit Drawings
ERV Units
- IKED_1 ERV GEN 4 with Plenum_DD
- IKED_2 ERV GEN 4 with no Plenum_DD
- HKED_1 ERV GEN 4 with Plenum_DD
- HKED_2 ERV GEN 4 with no Plenum
- HKED2_DD
Installation & Operation
Installation and Operation Manual
Standard:
Riser and Cabinet Installation Manual – Aug 2017
Riser:
Panels:
Front Panels
Hinged Panel
Start Up Video: IKV/HKV Start Up
For technical support, please contact our Service Manager at 1-888-220-5551 or via email: MKR@cgc-group.com
To request technical sales information please contact your local BULLDOG Representative or our Sales Division at 1-888-220-5551 or via email: RJG@cgc-group.com
Maintenance & Troubleshooting
Maintenance and Troubleshooting
Like everything else about the BULLDOG System, maintenance is simple, well thought out and easily done. Essentially, it consists of regular filter changes. the filters are located on the front of the unit for easy access. In the vertical stacked model all mechanical components are located in the removable chassis. In the event of unit failure the chassis can be removed and replaced with an operating chassis in a matter of minutes. This can be done by property’s maintenance staff, making the BULLDOG unit fully operational again with minimal downtime. The chassis can then be repaired at a convenient location. Central system components require simple scheduled maintenance program as recommended by the manufacturer. For complete maintenance instructions, consult the Installation and Operations Manual for the IK & HK Vertical Stacked Products.
Always remember to disable the unit using the disconnect before servicing to prevent injury or death due to electrical shock or contact with moving parts.
For assistance in diagnosing BULLDOG Heat Pumps the Trouble Shooting Guide below is downloadable or printable PDF file: BULLDOG Diagnosis Table
ComfortZone
Radiant In Floor Heating
Brochure: ComfortZone 2021