Greenwise Energy Calculations

For all your residential & commercial energy calculation needs.

Manual J, Manual D, Manual S, Duct Seal and Blower Door Testing in Jacksonville, Florida.

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HVAC Calculation Services Since 1974

Precise calculations expertly handled.

Greenwise Energy Calculations Is a Recognized Leader in Blower Door, Air Leak Testing and Energy Calculations in Jacksonville, FL.  We Have Been Providing HVAC Services to Residential and Commercial Clients in Jacksonville & North-East Florida Since 1974.

  • Highly rated and trusted experts
  • Fast service
  • Fair pricing
  • Serving Northeast Florida and South Georgia

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(904) 399-1007

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Manual J Calculations


Manual D Duct Design


Manual S selection


Duct Seal Testing & REPAIRS


Blower Door Testing

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2320 Emerson Street, Ste 1
Jacksonville, FL  32207