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fix: Fixes trueflow image links in project template.

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Michael Housh
2025-11-13 16:26:31 -05:00
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project/Report.md
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@@ -1,8 +1,8 @@
--- ---
title: "{{ document_title }}" title: '{{ document_title }}'
author: "{{ author_name }}" author: '{{ author_name }}'
date: \today{} date: \today{}
mainfont: Avenir Next mainfont: DejaVu Sans
documentclass: article documentclass: article
fontsize: 12pt fontsize: 12pt
# NOTE: The applegreen is a custom color defined in resources/head.tex # NOTE: The applegreen is a custom color defined in resources/head.tex
@@ -61,18 +61,16 @@ abstract: |
# Home Performance Report # Home Performance Report
Thank you for having us to your home for a home performance assessment. I hope that it was Thank you for having us to your home for a home performance assessment. I hope that it was beneficial. We learned a lot
beneficial. We learned a lot about your home and your goals during the brief visit. So, let’s jump about your home and your goals during the brief visit. So, let’s jump in to some of the things discovered.
in to some of the things discovered.
Below is a summary of your goals, house measurements, and our budget discussion as well as my Below is a summary of your goals, house measurements, and our budget discussion as well as my observations and some
observations and some recommendations. As part of the service we ran load calculations that help recommendations. As part of the service we ran load calculations that help determine the right sized HVAC for your home
determine the right sized HVAC for your home as it stand and with some upgrades. Those are attached as it stand and with some upgrades. Those are attached as are bids for replacements.
as are bids for replacements.
Once you read the report you’ll have 3 options: do nothing, pick and choose upgrades, or do more Once you read the report you’ll have 3 options: do nothing, pick and choose upgrades, or do more planning for more
planning for more difficult goals or complex projects. These options are discussed at the end of the difficult goals or complex projects. These options are discussed at the end of the report as well as our leanings for
report as well as our leanings for your home. your home.
\goalsimage \goalsimage
@@ -96,16 +94,14 @@ report as well as our leanings for your home.
Do not change them here, instead update them in the vars.sh file. Do not change them here, instead update them in the vars.sh file.
--> -->
One of the main objectives was to perform a blower door test and load calculations for the home. We One of the main objectives was to perform a blower door test and load calculations for the home. We discovered that the
discovered that the blower door number was {{ home.cfm50 }} [CFM50] for the approximately blower door number was {{ home.cfm50 }} [CFM50] for the approximately {{ home.square_feet }} \squarefoot
{{ home.square_feet }} \squarefoot ({{ home.lair }} [LAIR]). A leaky home, most often, is an ({{ home.lair }} [LAIR]). A leaky home, most often, is an uncomfortable and uncontrollable home.
uncomfortable and uncontrollable home.
> _Air leakage tends to have one of the largest impacts on the load of a home._ > _Air leakage tends to have one of the largest impacts on the load of a home._
> >
> - _Around 1:1 homes begin to be more controllable / comfortable_ > - _Around 1:1 homes begin to be more controllable / comfortable_
> - _your home is {{ home.cfm50 }}:{{ home.square_feet }} \squarefoot for a ratio of > - _your home is {{ home.cfm50 }}:{{ home.square_feet }} \squarefoot for a ratio of {{ home.lair }}_
> {{ home.lair }}_
> - _Leaky homes are very difficult to maintain comfort with HVAC alone._ > - _Leaky homes are very difficult to maintain comfort with HVAC alone._
# Observations # Observations
@@ -133,10 +129,9 @@ The below sections are observations about the current HVAC system and the home.
# Load Calculations # Load Calculations
Several [load-calculations][load-calculation] were performed on your home to determine the proper Several [load-calculations][load-calculation] were performed on your home to determine the proper equipment sizing for
equipment sizing for this application. Below is a comparison of the this application. Below is a comparison of the [load-calculations][load-calculation] with the current air leakage and
[load-calculations][load-calculation] with the current air leakage and several improved air leakage several improved air leakage targets.
targets.
## Your Loads ## Your Loads
@@ -154,38 +149,34 @@ targets.
> 1. _An undersized air conditioner is better than an oversized one._ > 1. _An undersized air conditioner is better than an oversized one._
> 1. _Supplemental dehumidification may be required for [SHR]'s below 0.83._ > 1. _Supplemental dehumidification may be required for [SHR]'s below 0.83._
The above table shows the relationship between air leakage and the amount of heating and cooling The above table shows the relationship between air leakage and the amount of heating and cooling that is required for
that is required for the home. A tight home is easier to control the comfort levels, offers superior the home. A tight home is easier to control the comfort levels, offers superior IAQ levels, and lower utility costs.
IAQ levels, and lower utility costs.
<!-- WARNING: Update this summary for the given project --> <!-- WARNING: Update this summary for the given project -->
The projected cooling size required for your home is around 2-Tons for the current leakage rate, or The projected cooling size required for your home is around 2-Tons for the current leakage rate, or 1.5-Tons if [shell]
1.5-Tons if [shell] improvements were made. improvements were made.
[Here is a link to your load calculation reports][loads-folder] [Here is a link to your load calculation reports][loads-folder]
# Airflow Assessment # Airflow Assessment
While on site, we also measured the total system airflow and static pressure of the system. Static While on site, we also measured the total system airflow and static pressure of the system. Static pressure is
pressure is equivalent to the blood pressure of your system and gives us a better understanding of equivalent to the blood pressure of your system and gives us a better understanding of the overall ability for the
the overall ability for the system to provide the proper amount of airflow, as well as how much it system to provide the proper amount of airflow, as well as how much it may struggle to do so.
may struggle to do so.
Static pressure is the amount of resistance that the blower has to work against in order to move air Static pressure is the amount of resistance that the blower has to work against in order to move air through the system.
through the system. Things that have an effect on the static pressure of the system include, air Things that have an effect on the static pressure of the system include, air filters (size and type), duct sizes, amount
filters (size and type), duct sizes, amount of ducts, length of ducts, duct fittings and of ducts, length of ducts, duct fittings and transitions, as well as internal system components. Each component of the
transitions, as well as internal system components. Each component of the system has a resistance system has a resistance associated with it that the blower has to overcome, by taking some key measurements we are able
associated with it that the blower has to overcome, by taking some key measurements we are able to to determine the [TESP] of the system. While there are several static pressures in the system, when we talk about static
determine the [TESP] of the system. While there are several static pressures in the system, when we pressure we are generally referring to [TESP].
talk about static pressure we are generally referring to [TESP].
Static pressure ([TESP]) has a range of _low_, _acceptable_, or _high_. While these numbers are Static pressure ([TESP]) has a range of _low_, _acceptable_, or _high_. While these numbers are specific to the actual
specific to the actual equipment, most manufacturers follow similar standards. For the sake of equipment, most manufacturers follow similar standards. For the sake of simplicity, 0.5" [wc] or under is an
simplicity, 0.5" [wc] or under is an _acceptable_ target, 0.8" [wc] is generally the max acceptable _acceptable_ target, 0.8" [wc] is generally the max acceptable static pressure (although we like to stay well below this
static pressure (although we like to stay well below this if possible), and above 0.8" [wc] is if possible), and above 0.8" [wc] is considered _high_ and should be addressed. _Low_ is generally not common and is
considered _high_ and should be addressed. _Low_ is generally not common and is rarely problematic, rarely problematic, so it is not focused on much.
so it is not focused on much.
<!-- NOTE: Force a new page here, for images and sub-section heading to be on same page --> <!-- NOTE: Force a new page here, for images and sub-section heading to be on same page -->
@@ -193,20 +184,18 @@ so it is not focused on much.
## Your Static Measurements ## Your Static Measurements
![True Flow Report][trueflow-image]{ height=50% } ![True Flow Report][trueflow-image]
<!-- WARNING: Summarize the static measurements here --> <!-- WARNING: Summarize the static measurements here -->
The above image is a snapshot of the static pressures recorded for your system. This shows that the The above image is a snapshot of the static pressures recorded for your system. This shows that the static pressure of
static pressure of your system is very high (1.114" [wc]). The primary culprits for the high static your system is very high (1.114" [wc]). The primary culprits for the high static pressure are that the filter is
pressure are that the filter is undersized for the airflow required and the return duct sizing is undersized for the airflow required and the return duct sizing is small.
small.
These measurements were taken in the heating mode because your system does not currently have air These measurements were taken in the heating mode because your system does not currently have air conditioning.
conditioning. Currently the heating airflow is on the low side for what is required for your system Currently the heating airflow is on the low side for what is required for your system (1200 CFM would be ideal). This
(1200 CFM would be ideal). This should be adjusted if possible during the install to get better should be adjusted if possible during the install to get better performance and efficiency out of the system, given that
performance and efficiency out of the system, given that some static pressures can be improved some static pressures can be improved during the project.
during the project.
\ \
\ \
@@ -219,17 +208,16 @@ during the project.
## Static Measurements Forecast ## Static Measurements Forecast
![True Flow Forecast][trueflow-forecast-image]{ height=50% } ![True Flow Forecast][trueflow-forecast-image]
<!-- WARNING: Summarize the forecast results below. --> <!-- WARNING: Summarize the forecast results below. -->
The above image is a snapshot is of a forecast of the static pressures after adding air The above image is a snapshot is of a forecast of the static pressures after adding air conditioning. It should be noted
conditioning. It should be noted that these measurements are based solely on the airflow required that these measurements are based solely on the airflow required for cooling mode, not for heating mode (in other words,
for cooling mode, not for heating mode (in other words, heating mode is going to be higher because heating mode is going to be higher because the airflow requirement is higher).
the airflow requirement is higher).
This shows that with an upgraded filter we can get the static pressure below the 0.8" [wc] max This shows that with an upgraded filter we can get the static pressure below the 0.8" [wc] max target while in cooling
target while in cooling mode. mode.
\ \
\ \
@@ -238,30 +226,28 @@ target while in cooling mode.
# Summary # Summary
The purpose of the home performance assessment is to help find the overlap between the house needs, The purpose of the home performance assessment is to help find the overlap between the house needs, the goals, and the
the goals, and the budget to see if there's a viable project. budget to see if there's a viable project.
<!-- WARNING: Add summary here --> <!-- WARNING: Add summary here -->
The house is pretty leaky overall. This is due to the age and construction style of the house. This The house is pretty leaky overall. This is due to the age and construction style of the house. This may lead to comfort
may lead to comfort problems or trouble maintaining comfort in all areas of the house. problems or trouble maintaining comfort in all areas of the house.
Based on the [load calculations][load-calculation], the previously quoted systems are too large for Based on the [load calculations][load-calculation], the previously quoted systems are too large for the current load, so
the current load, so we need to update the proposals to be for 2-Ton systems. This will help with we need to update the proposals to be for 2-Ton systems. This will help with the fact that the static pressure of the
the fact that the static pressure of the system is already really high. The static pressure for system is already really high. The static pressure for heating will likely still be above the 0.8" [wc] max threshold.
heating will likely still be above the 0.8" [wc] max threshold.
An upgraded air filter is going to be required to help alleviate the blower motor. Another return An upgraded air filter is going to be required to help alleviate the blower motor. Another return may be required in the
may be required in the living space to further drop the static pressure, however this could likely living space to further drop the static pressure, however this could likely be done in the future if desired. I would
be done in the future if desired. I would estimate that adding another return would be in the estimate that adding another return would be in the **$800-1,200** range.
**$800-1,200** range.
While on site it was mentioned that you would like some of the ducts to be sealed that go to the While on site it was mentioned that you would like some of the ducts to be sealed that go to the second floor. This is
second floor. This is something that is not included in our general proposals. I would estimate this something that is not included in our general proposals. I would estimate this to be an additional **$150-300** and will
to be an additional **$150-300** and will add options in the updated proposals. add options in the updated proposals.
Since the goal is to add air conditioning, then I would recommend going with a 2-Ton system. If the Since the goal is to add air conditioning, then I would recommend going with a 2-Ton system. If the system does not
system does not maintain then you could look into [shell] improvements and air sealing the home. maintain then you could look into [shell] improvements and air sealing the home.
Regards, Regards,
@@ -293,15 +279,15 @@ Regards,
folder with names / path setup in vars.sh --> folder with names / path setup in vars.sh -->
<!-- default is img/trueflow.png --> <!-- default is img/trueflow.png -->
[trueflow-image]: "{{ links.images.trueflow }}" [trueflow-image]: <{{ links.images.trueflow }}>
<!-- default is img/forecast.png --> <!-- default is img/forecast.png -->
[trueflow-forecast-image]: "{{ links.images.trueflow_forecast }}" [trueflow-forecast-image]: <{{ links.images.trueflow_forecast }}>
<!-- NOTE: These links are defined in vars.sh --> <!-- NOTE: These links are defined in vars.sh -->
[loads-folder]: "{{ links.documents.loads_folder }}" [loads-folder]: <{{ links.documents.loads_folder }}>
[trueflow-file]: "{{ links.documents.trueflow_file }}" [trueflow-file]: <{{ links.documents.trueflow_file }}>
[trueflow-forecast-file]: "{{ links.documents.trueflow_forecast_file }}" [trueflow-forecast-file]: <{{ links.documents.trueflow_forecast_file }}>
[document-folder]: "{{ links.documents.document_folder }}" [document-folder]: <{{ links.documents.document_folder }}>
<!-- prettier-ignore-end --> <!-- prettier-ignore-end -->