I think you are wasting your money. If you accept that distancing yourseld=f say six or more feet another person is adequate, that suggests that an infected person when she/he sneezes does not send droplets into suspension and then it disperses into the atmosphere and on into adjacent rooms.

"The position taken both by the CDC and by other global health agencies is that the coronavirus is primarily transmitted by person-to-person contact and by contact with virus-laden droplets expelled through coughing and sneezing. Although coughs and sneezes certainly suggest “airborne” to most people, the droplets travel only about 6 feet before dropping out of the air and settling on surfaces. This is one reason health agencies worldwide are recommending 6-foot/2-meter “social distancing,” as well as related efforts such as frequent handwashing and disinfection of surfaces, as the primary means of protecting yourself."

This article says a HEPA filter could be useful if you can’t keep the window in the room open.

https://www.consumerreports.org/air-purifiers/what-to-know-about-air-purifiers-and-coronavirus/

It would be much more useful to clean the surfaces in the room with virucides (like Lysol) than to spend on your HVAC system.

A note of caution when installing UV lights in your HVAC system. UV might cause the rapid deterioration of vinyl-insulated wiring and result in the premature failure of associated electrical systems.

These components and wiring must NOT be exposed to UV!

I would also suggest inquiring how this installation might affect your warranty; get all answers in writing.

Austin is right that the tubes must be replaced annually for maximum effectiveness – They are expensive; exposure to your eyes is a hazard!

IMPO

SR

The EPA does not recommend UV Lights:

Whether in its pure form or mixed with other chemicals, ozone can be harmful to health.

When inhaled, ozone can damage the lungs. Relatively low amounts of ozone can cause chest pain, coughing, shortness of breath and, throat irritation. It may also worsen chronic respiratory diseases such as asthma as well as compromise the ability of the body to fight respiratory infections.

Some studies show that ozone concentrations produced by ozone generators can exceed health standards even when one follows manufacturer’s instructions.

Many factors affect ozone concentrations including the amount of ozone produced by the machine(s), the size of the indoor space, the amount of material in the room with which ozone reacts, the outdoor ozone concentration, and the amount of ventilation. These factors make it difficult to control the ozone concentration in all circumstances.

Available scientific evidence shows that, at concentrations that do not exceed public health standards, ozone is generally ineffective in controlling indoor air pollution.

The concentration of ozone would have to greatly exceed health standards to be effective in removing most indoor air contaminants. In the process of reacting with chemicals indoors, ozone can produce other chemicals that themselves can be irritating and corrosive.