Heating and air conditioning repair in Miami

Ceiling cassette air conditioner in an office

Our guide to heating and air conditioning repair covers how the job works. Below: the Miami numbers a HVAC contractor looks at, with sources.

Homes in Miami

1979 is the median construction year for homes in Miami (Census ACS). Of the 56 other cities in this network, 19 have newer housing by median year built. Older homes here often have ducts and venting that were sized for a different system.
Source: Census ACS
Owners occupy roughly 31% of the occupied homes in Miami. That is 60,068 of 194,821 households. The share of owner-occupied homes here is higher than in 0 of the 56 other cities we cover. Owners usually decide on a replacement; renters should start with the landlord or property manager.
Source: Census ACS
In Miami, about 91% of occupied homes heat with electricity, more than any other fuel. Other fuels: utility gas 3%, bottled or tank gas under 1%, fuel oil or kerosene under 1%. Switching fuels is possible, but ask what it means for your panel, gas line and ducts.
Source: Census ACS

Miami climate, by the numbers

Miami averages about 4,187 cooling degree days a year, the NOAA measure of how hard air conditioning works. Measured at the Miami Beach (FL) station. The cooling load here is higher than in 56 of the 56 other cities we cover. Cooling demand at that level is why the outdoor unit's size and condition matter here.
Source: NOAA normals
Winter heating load in Miami runs to roughly 138 heating degree days in a normal year (NOAA 1991-2020 normals). Measured at the Miami Beach (FL) station. The heating load here is higher than in 0 of the 56 other cities we cover. Heating load like that decides whether a heat pump alone is enough or a furnace backup makes sense.
Source: NOAA normals
Near Miami the high reaches 90 F or more on about 30 days in a normal year. The number of 90 F days here is higher than in 20 of the 54 other cities we cover.
Source: NOAA normals

Seasons and risk in Miami

On heat wave risk, FEMA's National Risk Index puts Miami-Dade County, FL at relatively high. The same heat wave rating applies in 30 of the 55 other cities in this network. Extended heat is hard on compressors that are already weak.
Source: FEMA risk index
FEMA's National Risk Index lists Miami-Dade County, FL as very high for cold wave risk. The same cold wave rating applies in 16 of the 53 other cities in this network. A cold wave also stresses pipes and venting near the furnace, worth a look during a tune-up.
Source: FEMA risk index
In Florida, HVAC contractors are licensed by the Florida DBPR Construction Industry Licensing Board (CILB); status can be checked on the agency's official lookup page.
Source: Florida DBPR Construction Industry Licensing Board (CILB) (Florida) · Florida DBPR Construction Industry Licensing Board (CILB) license information · Authority naming the Florida DBPR Construction Industry Licensing Board (CILB)

Sources, checked October 2026

Ornate top of Miami's Freedom Tower framed by palm fronds
Photo: Photograph: Radomianin, Public domain, via Wikimedia Commons

Local offices and rules in Miami

Miami-Dade County also licenses general, building and residential contractors locally under Chapter 10 of the County Code, which requires proven field experience and passing an open-book exam.
Source: www.miamidade.gov. Checked October 2026.
FPL's A/C Rebate gives an instant credit on the invoice when a Participating Independent Contractor installs a new SEER2 15.2-or-higher central A/C system; the page actively offers it.
Source: www.fpl.com. Checked October 2026.
Natural gas in Miami-Dade is supplied by Florida City Gas, which lists Miami-Dade among the eight Florida counties it serves.
Source: www.floridacitygas.com. Checked October 2026.
If you smell gas, leave the house and call your gas utility from outside. Keep a working carbon monoxide alarm near the bedrooms, and do not open a furnace cabinet that is running.

Common jobs

Insulated refrigerant lines clamped along a basement wall