New-build kitchens: power and gas

4.4.1 Installation decides the fault list

Nocatee’s housing dates from 2007 onward, so almost every kitchen we work in was built to current practice by a production builder rather than assembled piecemeal over decades. That is mostly good news. It also means the faults are consistent: when something was done in a way that stores up trouble, it was usually done that way on a whole street.

These are the details that come back to us as service calls two to eight years later.

4.4.2 Circuits, and where they actually fail

Built-in cooking appliances sit on dedicated circuits, and a column of two or three appliances may be fed by more than one. Sizing is rarely the problem in new construction. Termination is.

The faults we find are in the last few feet: a lug that was never fully torqued, a terminal that has heat-cycled loose over years, a connection cooked by its own resistance. A full-size induction cooktop is fed by two hot legs, and losing one does not kill the appliance — some elements keep working and others do nothing, which looks like a random board failure and is not. We measure at the appliance junction box, not at the panel.

4.4.3 Fuel type has to match the hardware

Gas appliances are set up for one fuel. Natural gas and liquid propane use different orifices and different regulator settings, and an appliance fed the fuel it was not configured for will either burn yellow and lift off the ports or refuse to hold a simmer.

Conversion is a defined procedure with defined parts. It is not an adjustment, and it is not something to improvise. If a house has changed fuel supply, or an appliance has been moved from one property to another, the setup is the first thing to confirm.

4.4.4 Openings, clearances and the cooling path

Every built-in appliance has a specified cutout and a specified route for cooling air. Both are decided during construction and both get altered afterwards, usually with good intentions.

What we find: cavities lined or insulated after the appliance went in, trim kits from a different model used to close a gap, drawers under cooktops loaded so full that the return air path is blocked, and island panels fitted flush where the installer had left a gap on purpose.

The appliance responds by protecting itself. It cuts power, drops a speed, or opens a thermal cutout. Everything then tests good, which is why this class of fault gets diagnosed as electronic more often than anything else in this index. An open thermal cutout is a symptom. Replacing it without finding out why it opened books the same visit again in six months.

4.4.5 Hood ducting and makeup air

In a new house the entire duct run is above finished ceiling, so nobody sees it again. What we can assess is the canopy and the termination, and that is where most restrictions turn out to be: a damper at the cap stuck part-closed with grease, a screen silted up, or a run reduced in diameter to clear framing.

Flexible duct used where rigid was specified costs airflow permanently. Elbows stacked close to the blower outlet cost more than the same elbows spread along the run.

Makeup air is the other half. A tightly built house cannot supply a high-capacity hood on its own, and current residential code requires makeup air above a threshold set by the code in force. In newer St. Johns County construction the provision is usually installed as a powered damper or an interlocked supply. When it fails closed, the hood runs at full speed and achieves very little, and in a house with any combustion appliance that is a safety matter rather than an inconvenience.

4.4.6 The outdoor kitchen

Built-in grills bring their own installation questions: fuel type again, a supply run that may be shared with the pool or house equipment, an island with the ventilation openings the appliance requires, and a ground connection for the ignition circuit that will corrode faster than anything indoors.

4.4.7 What we do and do not do

We diagnose and repair Wolf cooking equipment, and part of that is telling you plainly when the appliance is sound and the installation around it is not. We do not perform electrical or gas-line work that belongs to a licensed contractor, and we will say when that is what a fault needs. We are independent, with no manufacturer affiliation.