HVAC Retrofit Engineering in Fond du Lac, WI

Fond du Lac is an active commercial and institutional engineering market in Wisconsin, where owners, contractors, and institutions need permit-ready MEP, structural, and civil drawings on real schedules. The Midwest climate requires school HVAC to handle extreme seasonal variation — from summer sessions in near-100°F heat to winter school days at sub-zero temperatures. Engides serves Fond du Lac with one coordinated team — design, calculations, and PE stamping handled together, so Fond du Lac projects move from scope to permit set without hand-offs.

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49 states · 10+ PEs · Same-day quotes on qualifying scopes · Zero excuses

What we engineer

Heat-pump and VRF/VRV conversions replacing gas and aging electric systems; dedicated outdoor air systems (DOAS) with energy recovery for humidity control; chiller and boiler plant retrofits; pneumatic-to-DDC controls upgrades; and refrigerant transitions off high-GWP HFCs per the AIM Act phasedown — full mechanical design with load calculations per ACCA Manual N / ASHRAE, ventilation per ASHRAE 62.1, and energy compliance per ASHRAE 90.1 and IECC.

Compliance & incentive stacking

NYC Local Law 97, Boston BERDO, Denver Energize Denver, Washington's Clean Buildings Performance Standard, Maryland BEPS, St. Louis BEPS — we engineer the HVAC retrofits that hit building performance standard targets, and we stack utility rebates (ComEd, Xcel, Mass Save, NYS Clean Heat, Energy Trust of Oregon, Efficiency Maine, Focus on Energy) to cut net project cost.

Backed by licensed PEs

All HVAC retrofit engineering is backed by Apex Grid Engineering: 10+ PEs licensed across 49 states, 20+ engineers, 15+ years of plan sets that pass plan check.

Project types

Downtown adaptive reuse
Deer District-area mixed-use
Menomonee Valley industrial
Brewery and food processing
Healthcare campus expansion
Lakefront multifamily

HVAC Retrofit Engineering nearby

Appleton · Beloit · Brookfield · Caledonia · De Pere · Eau Claire · Fitchburg · Franklin · Green Bay · Greenfield · Janesville · Kenosha